In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_nfacct: don't assume acct name is null-terminated BUG: KASAN: slab-out-of-bounds in .. lib/vsprintf.c:721 Read of size 1 at addr ffff88801eac95c8 by task syz-executor183/5851 [..] string+0x231/0x2b0 lib/vsprintf.c:721 vsnprintf+0x739/0xf00 lib/vsprintf.c:2874 [..] nfacct_mt_checkentry+0xd2/0xe0 net/netfilter/xt_nfacct.c:41 xt_check_match+0x3d1/0xab0 net/netfilter/x_tables.c:523 nfnl_acct_find_get() handles non-null input, but the error printk relied on its presence.

An update of the linux package has been released.

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

  - netfilter: xt_nfacct: don't assume acct name is null-terminated BUG: KASAN: slab-out-of-bounds in ..
    lib/vsprintf.c:721 Read of size 1 at addr ffff88801eac95c8 by task syz-executor183/5851 [..]     string+0x231/0x2b0 lib/vsprintf.c:721 vsnprintf+0x739/0xf00 lib/vsprintf.c:2874 [..]     nfacct_mt_checkentry+0xd2/0xe0 net/netfilter/xt_nfacct.c:41 xt_check_match+0x3d1/0xab0     net/netfilter/x_tables.c:523 nfnl_acct_find_get() handles non-null input, but the error printk relied on     its presence. (CVE-2025-38639)

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

ID	Name	Product	Family	Severity
265433	Photon OS 4.0: Linux PHSA-2025-4.0-0864	Nessus	PhotonOS Local Security Checks	high
261144	Photon OS 5.0: Linux PHSA-2025-5.0-0610	Nessus	PhotonOS Local Security Checks	high
260244	Linux Distros Unpatched Vulnerability : CVE-2025-38639	Nessus	Misc.	medium

Detections

Analytics

CVE-2025-38639

medium

Tenable Plugins

high

high

medium