In the Linux kernel, the following vulnerability has been resolved: fbdev: Fix do_register_framebuffer to prevent null-ptr-deref in fb_videomode_to_var If fb_add_videomode() in do_register_framebuffer() fails to allocate memory for fb_videomode, it will later lead to a null-ptr dereference in fb_videomode_to_var(), as the fb_info is registered while not having the mode in modelist that is expected to be there, i.e. the one that is described in fb_info->var. ================================================================ general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 1 PID: 30371 Comm: syz-executor.1 Not tainted 5.10.226-syzkaller #0 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:fb_videomode_to_var+0x24/0x610 drivers/video/fbdev/core/modedb.c:901 Call Trace: display_to_var+0x3a/0x7c0 drivers/video/fbdev/core/fbcon.c:929 fbcon_resize+0x3e2/0x8f0 drivers/video/fbdev/core/fbcon.c:2071 resize_screen drivers/tty/vt/vt.c:1176 [inline] vc_do_resize+0x53a/0x1170 drivers/tty/vt/vt.c:1263 fbcon_modechanged+0x3ac/0x6e0 drivers/video/fbdev/core/fbcon.c:2720 fbcon_update_vcs+0x43/0x60 drivers/video/fbdev/core/fbcon.c:2776 do_fb_ioctl+0x6d2/0x740 drivers/video/fbdev/core/fbmem.c:1128 fb_ioctl+0xe7/0x150 drivers/video/fbdev/core/fbmem.c:1203 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl fs/ioctl.c:739 [inline] __x64_sys_ioctl+0x19a/0x210 fs/ioctl.c:739 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 ================================================================ Even though fbcon_init() checks beforehand if fb_match_mode() in var_to_display() fails, it can not prevent the panic because fbcon_init() does not return error code. Considering this and the comment in the code about fb_match_mode() returning NULL - "This should not happen" - it is better to prevent registering the fb_info if its mode was not set successfully. Also move fb_add_videomode() closer to the beginning of do_register_framebuffer() to avoid having to do the cleanup on fail. Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - fbdev: Fix do_register_framebuffer to prevent null-ptr-deref in fb_videomode_to_var If fb_add_videomode()     in do_register_framebuffer() fails to allocate memory for fb_videomode, it will later lead to a null-ptr     dereference in fb_videomode_to_var(), as the fb_info is registered while not having the mode in modelist     that is expected to be there, i.e. the one that is described in fb_info->var.
    ================================================================ general protection fault, probably for     non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: null-ptr-deref in range     [0x0000000000000008-0x000000000000000f] CPU: 1 PID: 30371 Comm: syz-executor.1 Not tainted     5.10.226-syzkaller #0 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP:
    0010:fb_videomode_to_var+0x24/0x610 drivers/video/fbdev/core/modedb.c:901 Call Trace:
    display_to_var+0x3a/0x7c0 drivers/video/fbdev/core/fbcon.c:929 fbcon_resize+0x3e2/0x8f0     drivers/video/fbdev/core/fbcon.c:2071 resize_screen drivers/tty/vt/vt.c:1176 [inline]     vc_do_resize+0x53a/0x1170 drivers/tty/vt/vt.c:1263 fbcon_modechanged+0x3ac/0x6e0     drivers/video/fbdev/core/fbcon.c:2720 fbcon_update_vcs+0x43/0x60 drivers/video/fbdev/core/fbcon.c:2776     do_fb_ioctl+0x6d2/0x740 drivers/video/fbdev/core/fbmem.c:1128 fb_ioctl+0xe7/0x150     drivers/video/fbdev/core/fbmem.c:1203 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753     [inline] __se_sys_ioctl fs/ioctl.c:739 [inline] __x64_sys_ioctl+0x19a/0x210 fs/ioctl.c:739     do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1     ================================================================ Even though fbcon_init() checks     beforehand if fb_match_mode() in var_to_display() fails, it can not prevent the panic because fbcon_init()     does not return error code. Considering this and the comment in the code about fb_match_mode() returning     NULL - This should not happen - it is better to prevent registering the fb_info if its mode was not set     successfully. Also move fb_add_videomode() closer to the beginning of do_register_framebuffer() to avoid     having to do the cleanup on fail. Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
    (CVE-2025-38215)

Note that Nessus relies on the presence of the package as reported by the vendor.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2025-1111 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    Drivers: hv: vmbus: Leak pages if set_memory_encrypted() fails (CVE-2024-36913)

    In the Linux kernel, the following vulnerability has been resolved:

    xfs: don't walk off the end of a directory data block (CVE-2024-41013)

    In the Linux kernel, the following vulnerability has been resolved:

    mm: hugetlb: independent PMD page table shared count (CVE-2024-57883)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf: Fix kmemleak warning for percpu hashmap (CVE-2025-37807)

    In the Linux kernel, the following vulnerability has been resolved:

    mm/huge_memory: fix dereferencing invalid pmd migration entry (CVE-2025-37958)

    In the Linux kernel, the following vulnerability has been resolved:

    net_sched: prio: fix a race in prio_tune() (CVE-2025-38083)

    In the Linux kernel, the following vulnerability has been resolved:

    mm/hugetlb: unshare page tables during VMA split, not before (CVE-2025-38084)

    In the Linux kernel, the following vulnerability has been resolved:

    net_sched: red: fix a race in __red_change() (CVE-2025-38108)

    In the Linux kernel, the following vulnerability has been resolved:

    net/mdiobus: Fix potential out-of-bounds read/write access (CVE-2025-38111)

    In the Linux kernel, the following vulnerability has been resolved:

    net: Fix TOCTOU issue in sk_is_readable() (CVE-2025-38112)

    In the Linux kernel, the following vulnerability has been resolved:

    ACPI: CPPC: Fix NULL pointer dereference when nosmp is used (CVE-2025-38113)

    In the Linux kernel, the following vulnerability has been resolved:

    net_sched: sch_sfq: fix a potential crash on gso_skb handling (CVE-2025-38115)

    In the Linux kernel, the following vulnerability has been resolved:

    net: fix udp gso skb_segment after pull from frag_list (CVE-2025-38124)

    In the Linux kernel, the following vulnerability has been resolved:

    net: openvswitch: Fix the dead loop of MPLS parse (CVE-2025-38146)

    In the Linux kernel, the following vulnerability has been resolved:

    calipso: Don't call calipso functions for AF_INET sk. (CVE-2025-38147)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf, sockmap: Avoid using sk_socket after free when sending (CVE-2025-38154)

    In the Linux kernel, the following vulnerability has been resolved:

    RDMA/mlx5: Fix error flow upon firmware failure for RQ destruction (CVE-2025-38161)

    In the Linux kernel, the following vulnerability has been resolved:

    net_sched: sch_sfq: reject invalid perturb period (CVE-2025-38193)

    In the Linux kernel, the following vulnerability has been resolved:

    fbdev: Fix do_register_framebuffer to prevent null-ptr-deref in fb_videomode_to_var (CVE-2025-38215)

    In the Linux kernel, the following vulnerability has been resolved:

    nfsd: Initialize ssc before laundromat_work to prevent NULL dereference (CVE-2025-38231)

    In the Linux kernel, the following vulnerability has been resolved:

    af_unix: Don't leave consecutive consumed OOB skbs. (CVE-2025-38236)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf: Avoid __bpf_prog_ret0_warn when jit fails (CVE-2025-38280)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf: Fix WARN() in get_bpf_raw_tp_regs (CVE-2025-38285)

    In the Linux kernel, the following vulnerability has been resolved:

    ptp: remove ptp->n_vclocks check logic in ptp_vclock_in_use() (CVE-2025-38305)

    In the Linux kernel, the following vulnerability has been resolved:

    fbdev: core: fbcvt: avoid division by 0 in fb_cvt_hperiod() (CVE-2025-38312)

    In the Linux kernel, the following vulnerability has been resolved:

    mpls: Use rcu_dereference_rtnl() in mpls_route_input_rcu(). (CVE-2025-38324)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

An update of the linux package has been released.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2025-1080 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    eth: bnxt: fix out-of-range access of vnic_info array (CVE-2025-22112)

    In the Linux kernel, the following vulnerability has been resolved:

    wifi: cfg80211: init wiphy_work before allocating rfkill fails (CVE-2025-22119)

    In the Linux kernel, the following vulnerability has been resolved:

    block: fix adding folio to bio (CVE-2025-22122)

    In the Linux kernel, the following vulnerability has been resolved:

    wifi: ath12k: Clear affinity hint before calling ath12k_pci_free_irq() in error path (CVE-2025-22128)

    In the Linux kernel, the following vulnerability has been resolved:

    cpufreq/amd-pstate: Add missing NULL ptr check in amd_pstate_update (CVE-2025-23137)

    In the Linux kernel, the following vulnerability has been resolved:

    net_sched: hfsc: Address reentrant enqueue adding class to eltree twice (CVE-2025-38001)

    In the Linux kernel, the following vulnerability has been resolved:

    gpio: virtuser: fix potential out-of-bound write (CVE-2025-38082)

    In the Linux kernel, the following vulnerability has been resolved:

    net_sched: prio: fix a race in prio_tune() (CVE-2025-38083)

    In the Linux kernel, the following vulnerability has been resolved:

    mm/hugetlb: unshare page tables during VMA split, not before (CVE-2025-38084)

    In the Linux kernel, the following vulnerability has been resolved:

    sunrpc: handle SVC_GARBAGE during svc auth processing as auth error (CVE-2025-38089)

    In the Linux kernel, the following vulnerability has been resolved:

    x86/iopl: Cure TIF_IO_BITMAP inconsistencies (CVE-2025-38100)

    In the Linux kernel, the following vulnerability has been resolved:

    io_uring: fix use-after-free of sq->thread in __io_uring_show_fdinfo() (CVE-2025-38106)

    In the Linux kernel, the following vulnerability has been resolved:

    net_sched: ets: fix a race in ets_qdisc_change() (CVE-2025-38107)

    In the Linux kernel, the following vulnerability has been resolved:

    net_sched: red: fix a race in __red_change() (CVE-2025-38108)

    In the Linux kernel, the following vulnerability has been resolved:

    net/mdiobus: Fix potential out-of-bounds read/write access (CVE-2025-38111)

    In the Linux kernel, the following vulnerability has been resolved:

    net: Fix TOCTOU issue in sk_is_readable() (CVE-2025-38112)

    In the Linux kernel, the following vulnerability has been resolved:

    ACPI: CPPC: Fix NULL pointer dereference when nosmp is used (CVE-2025-38113)

    In the Linux kernel, the following vulnerability has been resolved:

    net_sched: sch_sfq: fix a potential crash on gso_skb handling (CVE-2025-38115)

    In the Linux kernel, the following vulnerability has been resolved:

    net: fix udp gso skb_segment after pull from frag_list (CVE-2025-38124)

    In the Linux kernel, the following vulnerability has been resolved:

    page_pool: Fix use-after-free in page_pool_recycle_in_ring (CVE-2025-38129)

    In the Linux kernel, the following vulnerability has been resolved:

    usb: acpi: Prevent null pointer dereference in usb_acpi_add_usb4_devlink() (CVE-2025-38134)

    In the Linux kernel, the following vulnerability has been resolved:

    dm: fix dm_blk_report_zones (CVE-2025-38141)

    In the Linux kernel, the following vulnerability has been resolved:

    net: openvswitch: Fix the dead loop of MPLS parse (CVE-2025-38146)

    In the Linux kernel, the following vulnerability has been resolved:

    calipso: Don't call calipso functions for AF_INET sk. (CVE-2025-38147)

    In the Linux kernel, the following vulnerability has been resolved:

    net: phy: clear phydev->devlink when the link is deleted (CVE-2025-38149)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf, sockmap: Avoid using sk_socket after free when sending (CVE-2025-38154)

    In the Linux kernel, the following vulnerability has been resolved:

    RDMA/mlx5: Fix error flow upon firmware failure for RQ destruction (CVE-2025-38161)

    In the Linux kernel, the following vulnerability has been resolved:

    netfilter: nft_set_pipapo: prevent overflow in lookup table allocation (CVE-2025-38162)

    In the Linux kernel, the following vulnerability has been resolved:

    arm64/fpsimd: Avoid clobbering kernel FPSIMD state with SMSTOP (CVE-2025-38169)

    In the Linux kernel, the following vulnerability has been resolved:

    arm64/fpsimd: Discard stale CPU state when handling SME traps (CVE-2025-38170)

    In the Linux kernel, the following vulnerability has been resolved:

    erofs: avoid using multiple devices with different type (CVE-2025-38172)

    In the Linux kernel, the following vulnerability has been resolved:

    net: clear the dst when changing skb protocol (CVE-2025-38192)

    In the Linux kernel, the following vulnerability has been resolved:

    net_sched: sch_sfq: reject invalid perturb period (CVE-2025-38193)

    In the Linux kernel, the following vulnerability has been resolved:

    netfilter: nft_set_pipapo: clamp maximum map bucket size to INT_MAX (CVE-2025-38201)

    In the Linux kernel, the following vulnerability has been resolved:

    smb: client: add NULL check in automount_fullpath (CVE-2025-38208)

    In the Linux kernel, the following vulnerability has been resolved:

    configfs-tsm-report: Fix NULL dereference of tsm_ops (CVE-2025-38210)

    In the Linux kernel, the following vulnerability has been resolved:

    fbdev: Fix do_register_framebuffer to prevent null-ptr-deref in fb_videomode_to_var (CVE-2025-38215)

    In the Linux kernel, the following vulnerability has been resolved:

    ext4: only dirty folios when data journaling regular files (CVE-2025-38220)

    In the Linux kernel, the following vulnerability has been resolved:

    nfsd: Initialize ssc before laundromat_work to prevent NULL dereference (CVE-2025-38231)

    In the Linux kernel, the following vulnerability has been resolved:

    serial: jsm: fix NPE during jsm_uart_port_init (CVE-2025-38265)

    In the Linux kernel, the following vulnerability has been resolved:

    net: drv: netdevsim: don't napi_complete() from netpoll (CVE-2025-38270)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf: Avoid __bpf_prog_ret0_warn when jit fails (CVE-2025-38280)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf: Fix WARN() in get_bpf_raw_tp_regs (CVE-2025-38285)

    In the Linux kernel, the following vulnerability has been resolved:

    scsi: smartpqi: Fix smp_processor_id() call trace for preemptible kernels (CVE-2025-38288)

    In the Linux kernel, the following vulnerability has been resolved:

    PM: EM: Fix potential division-by-zero error in em_compute_costs() (CVE-2025-38297)

    In the Linux kernel, the following vulnerability has been resolved:

    ptp: remove ptp->n_vclocks check logic in ptp_vclock_in_use() (CVE-2025-38305)

    In the Linux kernel, the following vulnerability has been resolved:

    fbdev: core: fbcvt: avoid division by 0 in fb_cvt_hperiod() (CVE-2025-38312)

    In the Linux kernel, the following vulnerability has been resolved:

    arm64/ptrace: Fix stack-out-of-bounds read in regs_get_kernel_stack_nth() (CVE-2025-38320)

    In the Linux kernel, the following vulnerability has been resolved:

    mpls: Use rcu_dereference_rtnl() in mpls_route_input_rcu(). (CVE-2025-38324)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
245026	Linux Distros Unpatched Vulnerability : CVE-2025-38215	Nessus	Misc.	medium
243500	Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2025-1111)	Nessus	Amazon Linux Local Security Checks	high
242163	Photon OS 5.0: Linux PHSA-2025-5.0-0558	Nessus	PhotonOS Local Security Checks	high
241741	Amazon Linux 2023 : bpftool, kernel6.12, kernel6.12-modules-extra (ALAS2023-2025-1080)	Nessus	Amazon Linux Local Security Checks	medium

Detections

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CVE-2025-38215

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Tenable Plugins

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high

medium