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CVE-2026-99143— tracing: Keep the predicate limit separate from program capacity

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： tracing：将谓词数量限制与程序容量分离 函数会将 增加 2，以预留末尾的 TRUE 和 FALSE 条目。同时，该函数还将这个增加后的值用作已解析谓词的上限。如果初始计数小于实际解析的谓词数量，程序可能会填满已分配的内存，导致后续访问越界（超出分配区域）。 修复方案是：保持 作为谓词数量的限制，并引入一个独立的变量用于表示分配的大小。这样，即使解析过程在达到限制时停止，仍能为两个末尾条目（TRUE 和 FALSE）以及一个零值条目预留空间。

AI Predicted 8.8 Difficulty: Moderate

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux 39f7c41c908bc82947ce47cdd021520ff486c53f< 2058a1fe791bb30fd6e4875a7ada3237076c8541 affected
39f7c41c908bc82947ce47cdd021520ff486c53f< 68ecc9510bb82dd78585c02bd5357f34ee16b153 affected
39f7c41c908bc82947ce47cdd021520ff486c53f< 803aa6fc2dbea25ab9d3ed19eca1c96d0ab17445 affected
6.6 affected
< 6.6 unaffected
6.18.59≤ 6.18.* unaffected
7.2.13≤ 7.2.* unaffected
7.3≤ * unaffected
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I. Basic Information for CVE-2026-99143

Vulnerability Information
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Vulnerability Title
tracing: Keep the predicate limit separate from program capacity
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: tracing: Keep the predicate limit separate from program capacity predicate_parse() adds two to nr_preds to reserve the terminal TRUE and FALSE entries. It also uses that increased value as the limit for parsed predicates. If the initial count is smaller than the number actually parsed, the program can fill the allocation and subsequent accesses can go past its end. Keep nr_preds as the predicate limit and use a separate value for the allocation size. This leaves space for both terminal entries and a zeroed entry when parsing stops at the limit.
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 39f7c41c908bc82947ce47cdd021520ff486c53f ~ 2058a1fe791bb30fd6e4875a7ada3237076c8541 -
Linux Linux 6.6 -

II. Public POCs for CVE-2026-99143

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III. Intelligence Information for CVE-2026-99143

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Patches & Fixes for CVE-2026-99143 (2)

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-2026-99129 selinux: fix BPF token permission checks
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-2026-99156 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 &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux