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CVE-2025-38639— netfilter: xt_nfacct: don't assume acct name is null-terminated

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于xt_nfacct假设acct名称以空字符结尾，可能导致越界读取。

CVSS 7.1 · High EPSS 0.19% · P8

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux ceb98d03eac5704820f2ac1f370c9ff385e3a9f5< 66d41268ede1e1b6e71ba28be923397ff0b2b9c3 affected
ceb98d03eac5704820f2ac1f370c9ff385e3a9f5< e021a1eee196887536a6630c5492c23a4c78d452 affected
ceb98d03eac5704820f2ac1f370c9ff385e3a9f5< b10cfa2de13d28ddd03210eb234422b7ec92725a affected
ceb98d03eac5704820f2ac1f370c9ff385e3a9f5< e18939176e657a3a20bfbed357b8c55a9f82aba3 affected
ceb98d03eac5704820f2ac1f370c9ff385e3a9f5< 58004aa21e79addaf41667bfe65e93ec51653f18 affected
ceb98d03eac5704820f2ac1f370c9ff385e3a9f5< 7c1ae471da69c09242834e956218ea6a42dd405a affected
ceb98d03eac5704820f2ac1f370c9ff385e3a9f5< 58007fc7b94fb2702000045ff401eb7f5bde7828 affected
ceb98d03eac5704820f2ac1f370c9ff385e3a9f5< df13c9c6ce1d55c31d1bd49db65a7fbbd86aab13 affected
… +12 more rows
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I. Basic Information for CVE-2025-38639

Vulnerability Information
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Vulnerability Title
netfilter: xt_nfacct: don't assume acct name is null-terminated
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于xt_nfacct假设acct名称以空字符结尾，可能导致越界读取。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux ceb98d03eac5704820f2ac1f370c9ff385e3a9f5 ~ 66d41268ede1e1b6e71ba28be923397ff0b2b9c3 -
Linux Linux 3.3 -

II. Public POCs for CVE-2025-38639

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III. Intelligence Information for CVE-2025-38639

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Patches & Fixes for CVE-2025-38639 (1)

Same Patch Batch · Linux · 2025-08-22 · 60 CVEs total

CVE-2025-38660 9.8 CRITICAL [ceph] parse_longname(): strrchr() expects NUL-terminated string
CVE-2025-38658 8.8 HIGH nvmet: pci-epf: Do not complete commands twice if nvmet_req_init() fails
CVE-2025-38643 8.8 HIGH wifi: cfg80211: Add missing lock in cfg80211_check_and_end_cac()
CVE-2024-58239 8.2 HIGH tls: stop recv() if initial process_rx_list gave us non-DATA
CVE-2025-38675 7.8 HIGH xfrm: state: initialize state_ptrs earlier in xfrm_state_find
CVE-2025-38659 7.8 HIGH gfs2: No more self recovery
CVE-2025-38656 7.8 HIGH wifi: iwlwifi: Fix error code in iwl_op_mode_dvm_start()
CVE-2025-38653 7.8 HIGH proc: use the same treatment to check proc_lseek as ones for proc_read_iter et.al
CVE-2025-38627 7.8 HIGH f2fs: compress: fix UAF of f2fs_inode_info in f2fs_free_dic
CVE-2025-38667 7.8 HIGH iio: fix potential out-of-bound write
CVE-2025-38619 7.8 HIGH media: ti: j721e-csi2rx: fix list_del corruption
CVE-2025-38640 7.8 HIGH bpf: Disable migration in nf_hook_run_bpf().
CVE-2025-38670 7.8 HIGH arm64/entry: Mask DAIF in cpu_switch_to(), call_on_irq_stack()
CVE-2025-38618 7.8 HIGH vsock: Do not allow binding to VMADDR_PORT_ANY
CVE-2025-38617 7.8 HIGH net/packet: fix a race in packet_set_ring() and packet_notifier()
CVE-2025-38616 7.8 HIGH tls: handle data disappearing from under the TLS ULP
CVE-2025-38657 7.3 HIGH wifi: rtw89: mcc: prevent shift wrapping in rtw89_core_mlsr_switch()
CVE-2025-38652 7.3 HIGH f2fs: fix to avoid out-of-boundary access in devs.path
CVE-2025-38661 7.1 HIGH platform/x86: alienware-wmi-wmax: Fix `dmi_system_id` array
CVE-2025-38662 7.1 HIGH ASoC: mediatek: mt8365-dai-i2s: pass correct size to mt8365_dai_set_priv

Showing top 20 of 60 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-38639

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