CVE-2025-38639

High

Description

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.

SeverityHigh
CVSS7.1
Exploit probability—
ProductLinux Kernel
PublishedAug 22, 2025
First seenAug 22, 2025

How to fix

Update
  • linux linux_kernel5.4.297, 5.10.241, 5.15.190, 6.1.148, 6.6.102, 6.12.42, 6.15.10, 6.16.1 or later

Affected products

ProductAffected versionsFixed in
linux linux_kernel3.3 ≤ v < 5.4.297, 5.5 ≤ v < 5.10.241, 5.11 ≤ v < 5.15.190, 5.16 ≤ v < 6.1.148, 6.2 ≤ v < 6.6.102, 6.7 ≤ v < 6.12.42, 6.13 ≤ v < 6.15.10, 6.16 ≤ v < 6.16.15.4.297, 5.10.241, 5.15.190, 6.1.148, 6.6.102, 6.12.42, 6.15.10, 6.16.1
debian debian_linux11.0—

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