In the Linux kernel, the following vulnerability has been resolved: ext4: fix BUG in ext4_mb_new_inode_pa() due to overflow When we calculate the end position of ext4_free_extent, this position may be exactly where ext4_lblk_t (i.e. uint) overflows. For example, if ac_g_ex.fe_logical is 4294965248 and ac_orig_goal_len is 2048, then the computed end is 0x100000000, which is 0. If ac->ac_o_ex.fe_logical is not the first case of adjusting the best extent, that is, new_bex_end > 0, the following BUG_ON will be triggered: ========================================================= kernel BUG at fs/ext4/mballoc.c:5116! invalid opcode: 0000 [#1] PREEMPT SMP PTI CPU: 3 PID: 673 Comm: xfs_io Tainted: G E 6.5.0-rc1+ #279 RIP: 0010:ext4_mb_new_inode_pa+0xc5/0x430 Call Trace: <TASK> ext4_mb_use_best_found+0x203/0x2f0 ext4_mb_try_best_found+0x163/0x240 ext4_mb_regular_allocator+0x158/0x1550 ext4_mb_new_blocks+0x86a/0xe10 ext4_ext_map_blocks+0xb0c/0x13a0 ext4_map_blocks+0x2cd/0x8f0 ext4_iomap_begin+0x27b/0x400 iomap_iter+0x222/0x3d0 __iomap_dio_rw+0x243/0xcb0 iomap_dio_rw+0x16/0x80 ========================================================= A simple reproducer demonstrating the problem: mkfs.ext4 -F /dev/sda -b 4096 100M mount /dev/sda /tmp/test fallocate -l1M /tmp/test/tmp fallocate -l10M /tmp/test/file fallocate -i -o 1M -l16777203M /tmp/test/file fsstress -d /tmp/test -l 0 -n 100000 -p 8 & sleep 10 && killall -9 fsstress rm -f /tmp/test/tmp xfs_io -c "open -ad /tmp/test/file" -c "pwrite -S 0xff 0 8192" We simply refactor the logic for adjusting the best extent by adding a temporary ext4_free_extent ex and use extent_logical_end() to avoid overflow, which also simplifies the code.

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

  - ext4: fix BUG in ext4_mb_new_inode_pa() due to overflow When we calculate the end position of     ext4_free_extent, this position may be exactly where ext4_lblk_t (i.e. uint) overflows. For example, if     ac_g_ex.fe_logical is 4294965248 and ac_orig_goal_len is 2048, then the computed end is 0x100000000, which     is 0. If ac->ac_o_ex.fe_logical is not the first case of adjusting the best extent, that is, new_bex_end >     0, the following BUG_ON will be triggered: =========================================================     kernel BUG at fs/ext4/mballoc.c:5116! invalid opcode: 0000 [#1] PREEMPT SMP PTI CPU: 3 PID: 673 Comm:
    xfs_io Tainted: G E 6.5.0-rc1+ #279 RIP: 0010:ext4_mb_new_inode_pa+0xc5/0x430 Call Trace: <TASK>     ext4_mb_use_best_found+0x203/0x2f0 ext4_mb_try_best_found+0x163/0x240     ext4_mb_regular_allocator+0x158/0x1550 ext4_mb_new_blocks+0x86a/0xe10 ext4_ext_map_blocks+0xb0c/0x13a0     ext4_map_blocks+0x2cd/0x8f0 ext4_iomap_begin+0x27b/0x400 iomap_iter+0x222/0x3d0 __iomap_dio_rw+0x243/0xcb0     iomap_dio_rw+0x16/0x80 ========================================================= A simple reproducer     demonstrating the problem: mkfs.ext4 -F /dev/sda -b 4096 100M mount /dev/sda /tmp/test fallocate -l1M     /tmp/test/tmp fallocate -l10M /tmp/test/file fallocate -i -o 1M -l16777203M /tmp/test/file fsstress -d     /tmp/test -l 0 -n 100000 -p 8 & sleep 10 && killall -9 fsstress rm -f /tmp/test/tmp xfs_io -c open -ad     /tmp/test/file -c pwrite -S 0xff 0 8192 We simply refactor the logic for adjusting the best extent by     adding a temporary ext4_free_extent ex and use extent_logical_end() to avoid overflow, which also     simplifies the code. (CVE-2023-54069)

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

The version of kernel installed on the remote host is prior to 5.4.261-174.360. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.4-2024-072 advisory.

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

    Input: synaptics-rmi4 - fix use after free in rmi_unregister_function() (CVE-2023-52840)

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

    llc: verify mac len before reading mac header (CVE-2023-52843)

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

    tipc: Change nla_policy for bearer-related names to NLA_NUL_STRING (CVE-2023-52845)

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

    drm/radeon: possible buffer overflow (CVE-2023-52867)

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

    thermal: core: prevent potential string overflow (CVE-2023-52868)

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

    ext4: fix BUG in ext4_mb_new_inode_pa() due to overflow (CVE-2023-54069)

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.

The version of kernel installed on the remote host is prior to 5.10.201-191.748. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.10-2024-061 advisory.

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

    Input: synaptics-rmi4 - fix use after free in rmi_unregister_function() (CVE-2023-52840)

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

    llc: verify mac len before reading mac header (CVE-2023-52843)

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

    tipc: Change nla_policy for bearer-related names to NLA_NUL_STRING (CVE-2023-52845)

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

    hsr: Prevent use after free in prp_create_tagged_frame() (CVE-2023-52846)

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

    padata: Fix refcnt handling in padata_free_shell() (CVE-2023-52854)

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

    drm/radeon: possible buffer overflow (CVE-2023-52867)

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

    thermal: core: prevent potential string overflow (CVE-2023-52868)

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

    pstore/platform: Add check for kstrdup (CVE-2023-52869)

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

    ext4: fix BUG in ext4_mb_new_inode_pa() due to overflow (CVE-2023-54069)

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.

The version of kernel installed on the remote host is prior to 5.15.139-93.147. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.15-2023-031 advisory.

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

    llc: verify mac len before reading mac header (CVE-2023-52843)

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

    hsr: Prevent use after free in prp_create_tagged_frame() (CVE-2023-52846)

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

    padata: Fix refcnt handling in padata_free_shell() (CVE-2023-52854)

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

    perf: hisi: Fix use-after-free when register pmu fails (CVE-2023-52859)

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

    thermal: core: prevent potential string overflow (CVE-2023-52868)

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

    pstore/platform: Add check for kstrdup (CVE-2023-52869)

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

    ext4: fix BUG in ext4_mb_new_inode_pa() due to overflow (CVE-2023-54069)

    A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to     achieve local privilege escalation.

    The function nft_trans_gc_catchall did not remove the catchall set element from the catchall_list when the     argument sync is true, making it possible to free a catchall set element many times.

    We recommend upgrading past commit 93995bf4af2c5a99e2a87f0cd5ce547d31eb7630. (CVE-2023-6111)

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.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2023-430 advisory.

    An issue was discovered in the Linux kernel before 6.5.9, exploitable by local users with userspace access     to MMIO registers. Incorrect access checking in the #VC handler and instruction emulation of the SEV-ES     emulation of MMIO accesses could lead to arbitrary write access to kernel memory (and thus privilege     escalation). This depends on a race condition through which userspace can replace an instruction before     the #VC handler reads it. (CVE-2023-46813)

    An issue was discovered in the Linux kernel through 6.5.9. During a race with SQ thread exit, an     io_uring/fdinfo.c io_uring_show_fdinfo NULL pointer dereference can occur. (CVE-2023-46862)

    x86: KVM: SVM: always update the x2avic msr interception (CVE-2023-5090)

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

    ext4: fix BUG in ext4_mb_new_inode_pa() due to overflow (CVE-2023-54069)

    A heap out-of-bounds write vulnerability in the Linux kernel's Linux Kernel Performance Events (perf)     component can be exploited to achieve local privilege escalation.

    If perf_read_group() is called while an event's sibling_list is smaller than its child's sibling_list, it     can increment or write to memory locations outside of the allocated buffer.

    We recommend upgrading past commit 32671e3799ca2e4590773fd0e63aaa4229e50c06. (CVE-2023-5717)

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
297194	SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2026:0315-1)	Nessus	SuSE Local Security Checks	high
296680	SUSE SLES15 / openSUSE 15 Security Update : kernel (SUSE-SU-2026:0293-1)	Nessus	SuSE Local Security Checks	high
296676	SUSE SLES15 Security Update : kernel (SUSE-SU-2026:0281-1)	Nessus	SuSE Local Security Checks	high
296481	SUSE SLES15 Security Update : kernel (SUSE-SU-2026:0278-1)	Nessus	SuSE Local Security Checks	high
279890	Linux Distros Unpatched Vulnerability : CVE-2023-54069	Nessus	Misc.	high
200914	Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.4-2024-072 (ALASKERNEL-5.4-2024-072)	Nessus	Amazon Linux Local Security Checks	high
200908	Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.10-2024-061 (ALASKERNEL-5.10-2024-061)	Nessus	Amazon Linux Local Security Checks	high
186553	Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.15-2023-031 (ALASKERNEL-5.15-2023-031)	Nessus	Amazon Linux Local Security Checks	high
185719	Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2023-430)	Nessus	Amazon Linux Local Security Checks	high

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