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CVE-2026-99129— selinux: fix BPF token permission checks

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.

在 Linux 内核中，以下漏洞已得到修复： selinux：修复 BPF 令牌权限检查在中，可通过已解析的路径/dentry 获取 bpffs 创建者的 SID；在和中，可直接从令牌本身获取该信息。因此，无需再通过令牌的文件描述符重复查找该 SID。这一改动不仅简化了代码，还避免了因用户更改传入内核的令牌文件描述符而可能引发的 TOCTOU（时间差攻击）问题。

AI Predicted 5.5 Difficulty: Moderate Updated Oct 28, 2026

Possible ATT&CK Techniques 1 AI

T1548.001 · Setuid and Setgid

Affected Version Matrix 6

Vendor	Product	Version Range	Status
Linux	Linux	`5473a722f782f79f96b4691400d681c01fcacc2f< e1ef306ba20eb13099ca4463527890df67619405`	affected
		`5473a722f782f79f96b4691400d681c01fcacc2f< 77d499e61d36e883a6ad1f10afe05f556aa7e0cc`	affected
		`7.0`	affected
		`< 7.0`	unaffected
		`7.2.13≤ 7.2.*`	unaffected
		`7.3≤ *`	unaffected

Updated Oct 28, 2026

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Vulnerability Information

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Vulnerability Title

selinux: fix BPF token permission checks

Source: CVE Program / CVE List V5

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: selinux: fix BPF token permission checks Avoid multiple lookups of the bpffs creator SID using the token's file descriptor when the same information can be found via the resolved path/dentry (in selinux_bpf_token_create()) or the token itself (in selinux_bpf_map_create() and selinux_bpf_prog_load()). Not only does this simplify the code, it avoids potential TOCTOU issues if the user changes the token file descriptor passed into the kernel.

Source: CVE Program / CVE List V5

CVSS Information

N/A

Source: CVE Program / CVE List V5

Vulnerability Type

N/A

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Linux	Linux	5473a722f782f79f96b4691400d681c01fcacc2f ~ e1ef306ba20eb13099ca4463527890df67619405	-
Linux	Linux	7.0	-

II. Public POCs for CVE-2026-99129

#	POC Description	Source Link	Shenlong Link

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III. Intelligence Information for CVE-2026-99129

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Patches & Fixes for CVE-2026-99129 (2)

https://www.cve.org/CVERecord?id=CVE-2026-99129

Same Patch Batch · Linux · 2026-10-28 · 117 CVEs total

CVE-2026-99144		sched_ext: Fix use-after-free of a destroyed user DSQ by a deferred reenqueue
CVE-2026-99130		io_uring/cancel: don't spin on local work the task can't run
CVE-2026-99131		xfs: fix capability check in xfs
CVE-2026-99133		net/iucv: fix the recvmsg window update
CVE-2026-99132		xfs: don't hold buffer locks across sync transaction commit in xfs_sync_sb_buf
CVE-2026-99134		mac802154: fix data race and NULL deref on local->assoc_dev
CVE-2026-99135		dm-integrity: fix infinite loop on discard with large tag size
CVE-2026-99137		cifs: don't update i_size in cifs_do_truncate without a cached handle
CVE-2026-99136		dm-crypt: fix a tiny race condition in crypt_dec_pending
CVE-2026-99138		tcp: fix use-after-free in do_tcp_getsockopt(TCP_CC_INFO)
CVE-2026-99140		tracing: Fix hist trigger timestamps for buffered events
CVE-2026-99139		tcp: fix use-after-free in do_tcp_getsockopt(TCP_CONGESTION)
CVE-2026-99141		tracing: Fix crash in print_graph_function_event()
CVE-2026-99142		tracing: Check operator stack capacity before pushing
CVE-2026-99143		tracing: Keep the predicate limit separate from program capacity
CVE-2026-99156		scsi: st: Fix use-after-free race between st_remove() and st_open()
CVE-2026-99153		scsi: libiscsi: Validate the ITT reflected in a Reject PDU
CVE-2026-99152		scsi: libiscsi: Validate the task named by a management response
CVE-2026-99154		scsi: libiscsi: Reject a negative task index from parse_pdu_itt
CVE-2026-99151		drm/amd/display: Fix NULL sink dereference in USB4 bandwidth functions

Showing top 20 of 117 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux

Same vendor: Linux