Linux Kernel up to 7.2-rc2 Tracing regex_match_glob out-of-bounds

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$0-$5k1.55-

Summaryinfo

A vulnerability classified as critical has been found in Linux Kernel up to 7.2-rc2. This impacts the function regex_match_glob of the component Tracing. This manipulation causes out-of-bounds. This vulnerability is registered as CVE-2026-64299. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel up to 7.2-rc2. Affected by this vulnerability is the function regex_match_glob of the component Tracing. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: tracing: Prevent out-of-bounds read in glob matching String event fields are not necessarily NUL-terminated, so the filter predicate functions (filter_pred_string(), filter_pred_strloc() and filter_pred_strrelloc()) pass the field length to the regex match callbacks, and the length-aware matchers honour it. regex_match_glob() was the exception: it ignored the length and called glob_match(), which scans the string until it hits a NUL byte. Some string fields are not NUL-terminated. One example is the dynamic char array of the xfs_* namespace tracepoints, which is copied without a trailing NUL. For such a field, glob matching reads past the end of the event field, causing a KASAN slab-out-of-bounds read in glob_match(), reached via regex_match_glob() and filter_match_preds() from the xfs_lookup tracepoint. Add a length-bounded glob_match_len() and use it from regex_match_glob() so glob matching always stops at the field boundary. The matching loop is factored into a shared helper so glob_match() keeps its behaviour.

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2026-64299 since 07/19/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/25/2026).

Upgrading to version 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.96, 6.18.39, 7.1.4 or 7.2-rc3 eliminates this vulnerability. Applying the patch 265f3a690f6c7d69ef7d2ca50b04b4853a211df3/ee5b8888d3248618251fb69a2fad92afcb81557e/56d4c9ab84714eebb285a2fee68aaedf81e3ef15/35ae19764eabfe9c29029d3b5713c86e6855acdf/ebb55902856973906c8bb339a3a34824ed4a5086/2dad64a97e1df47f5d9ccb17fa319aa348617226/e5d5f3bd053a5f14787526c9f0f55ef900d43ac6/0a6070839b1ef276d5b05bedfb787743e140fb17 is able to eliminate this problem.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.261/5.15.212/6.1.178/6.6.145/6.12.96/6.18.39/7.1.4/7.2-rc3
Patch: 265f3a690f6c7d69ef7d2ca50b04b4853a211df3/ee5b8888d3248618251fb69a2fad92afcb81557e/56d4c9ab84714eebb285a2fee68aaedf81e3ef15/35ae19764eabfe9c29029d3b5713c86e6855acdf/ebb55902856973906c8bb339a3a34824ed4a5086/2dad64a97e1df47f5d9ccb17fa319aa348617226/e5d5f3bd053a5f14787526c9f0f55ef900d43ac6/0a6070839b1ef276d5b05bedfb787743e140fb17

Timelineinfo

07/19/2026 CVE reserved
07/25/2026 +6 days Advisory disclosed
07/25/2026 +0 days VulDB entry created
07/25/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-64299 (🔒)
GCVE (CVE): GCVE-0-2026-64299
GCVE (VulDB): GCVE-100-383095

Entryinfo

Created: 07/25/2026 14:17
Changes: 07/25/2026 14:17 (59)
Complete: 🔍
Cache ID: 216::103

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