Linux Kernel up to 7.2.0 XFS xfs_attr3_leaf_verify_entry out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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7.8$0-$5k0.00

Summaryinfo

A vulnerability labeled as very critical has been found in Linux Kernel up to 7.2.0. This impacts the function xfs_attr3_leaf_verify_entry of the component XFS. Executing a manipulation can lead to out-of-bounds. This vulnerability appears as CVE-2026-80805. The attack requires local access. There is no available exploit.

Detailsinfo

A vulnerability was found in Linux Kernel up to 7.2.0. It has been declared as very critical. This vulnerability affects the function xfs_attr3_leaf_verify_entry of the component XFS. 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. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: xfs: validate attr entry pointer before field access xfs_attr3_leaf_verify_entry() accesses lentry/rentry fields (namelen, valuelen) before checking if the entry pointer itself is within bounds. If nameidx is crafted to point near the end of the buffer, these field accesses can read out-of-bounds before the bounds check at name_end > buf_end is performed. Add explicit bounds checks for entry pointers before accessing their fields. Use offsetof() to check that the start of the flexible array member (nameval/name) is within bounds, which ensures all preceding fields are safe to access.

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2026-80805 since 08/26/2026. The exploitation appears to be easy. The attack needs to be approached locally. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/04/2026).

Upgrading to version 5.10.267, 5.15.218, 6.1.185, 6.6.154, 6.12.106, 6.18.47, 7.1.11, 7.2.1 or 7.3-rc1 eliminates this vulnerability. Applying the patch 0f82586741e39926542f621bafa424e237a04fa4/134d82a2b5e3eba3ebf58753a1387b22f26ca1de/03a12253dd2a036545bdb0110a4e0b8dc70f8e7c/e99120b5944a16d0bc27e52b33de78bcdaaabf5c/98a42bb9d60d42898c3494de351a1bf508348cde/184c1a80421a5b5ddcd262e47980ce2e67fee211/9f92e749fc08b7ff3d9da190c4d1b2273745b282/c35da2bac6f7cb9a9be73f188b4fcc324615c327/b7eea80be25f3334f131d52982b3131aba77b97d is able to eliminate this problem.

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Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.2
VulDB Meta Temp Score: 7.8

VulDB Base Score: 8.2
VulDB Temp Score: 7.8
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: Partially
Local: Yes
Remote: Partially

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 5.10.267/5.15.218/6.1.185/6.6.154/6.12.106/6.18.47/7.1.11/7.2.1/7.3-rc1
Patch: 0f82586741e39926542f621bafa424e237a04fa4/134d82a2b5e3eba3ebf58753a1387b22f26ca1de/03a12253dd2a036545bdb0110a4e0b8dc70f8e7c/e99120b5944a16d0bc27e52b33de78bcdaaabf5c/98a42bb9d60d42898c3494de351a1bf508348cde/184c1a80421a5b5ddcd262e47980ce2e67fee211/9f92e749fc08b7ff3d9da190c4d1b2273745b282/c35da2bac6f7cb9a9be73f188b4fcc324615c327/b7eea80be25f3334f131d52982b3131aba77b97d

Timelineinfo

08/26/2026 CVE reserved
09/04/2026 +9 days Advisory disclosed
09/04/2026 +0 days VulDB entry created
09/04/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-80805 (🔒)
GCVE (CVE): GCVE-0-2026-80805
GCVE (VulDB): GCVE-100-398968

Entryinfo

Created: 09/04/2026 18:37
Changes: 09/04/2026 18:37 (59)
Complete: 🔍
Cache ID: 216::103

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