CVE-2025-38639
Published: August 26, 2025Last modified: August 26, 2025
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.151-r0) |
| 25 LTS | linux-lts | Fixed (6.12.44-r0) | |
| Stream | linux-lts | Fixed (6.12.43-r0) |
References
- https://git.kernel.org/stable/c/58004aa21e79addaf41667bfe65e93ec51653f18
- https://git.kernel.org/stable/c/58007fc7b94fb2702000045ff401eb7f5bde7828
- https://git.kernel.org/stable/c/66d41268ede1e1b6e71ba28be923397ff0b2b9c3
- https://git.kernel.org/stable/c/7c1ae471da69c09242834e956218ea6a42dd405a
- https://git.kernel.org/stable/c/b10cfa2de13d28ddd03210eb234422b7ec92725a
- https://git.kernel.org/stable/c/bf58e667af7d96c8eb9411f926a0a0955f41ce21
- https://git.kernel.org/stable/c/df13c9c6ce1d55c31d1bd49db65a7fbbd86aab13
- https://git.kernel.org/stable/c/e021a1eee196887536a6630c5492c23a4c78d452
- https://git.kernel.org/stable/c/e18939176e657a3a20bfbed357b8c55a9f82aba3
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html