CVE-2026-93159crypto: atmel-sha204a - fix heap info leak on I2C transfer failure
- —Not scoredno CVSS score yet
- 0.22%Exploitation in 30 daysEPSS · top 87% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: crypto: atmel-sha204a - fix heap info leak on I2C transfer failure The nonblocking RNG path allocates a work_data structure to track the state of an in-flight asynchronous I2C request. This pointer is stored in rng->priv and later consumed by the read path once the transaction completes. If the underlying I2C transfer fails, the completion callback is invoked with a non-zero status. In this case, the allocated work_data is not usable for producing RNG output and must not remain associated with the hwrng state. Previously, the failure path only logged a warning but left the pointer state uncleared, which can result in subsequent read attempts observing stale state and interpreting it as valid completion data. Fix this by freeing the pending work_data. The I2C transaction reports an error. This ensures that failed requests do not leave residual state behind that could be interpreted as valid RNG data on later reads. Clearing rng->priv is done at the subsequent call to nonblocking read.
Timeline
ID reserved
By Linux
Published
- 32 days later
· 32 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.22% · top 87% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected da001fb651b00e1deeaf24767dd691ae8152a4f5 – < a430b5b6d2ddd2b266330f8507a655be1148347d
- affected da001fb651b00e1deeaf24767dd691ae8152a4f5 – < 4e76d85e505b7451925efbcd67c015e8c2440c68
- affected da001fb651b00e1deeaf24767dd691ae8152a4f5 – < bcac9052e19490231ff6e0678a06bd2fcf8db3af
- affected da001fb651b00e1deeaf24767dd691ae8152a4f5 – < 28cc179252347718f97045dd5ea74165609dbd7d
- affected da001fb651b00e1deeaf24767dd691ae8152a4f5 – < 0d6db386133d9230befb77967bbf130443964860
- affected da001fb651b00e1deeaf24767dd691ae8152a4f5 – < f4d347fb1309b69ea6f817a17e6b2893c8d754b7
- affected da001fb651b00e1deeaf24767dd691ae8152a4f5 – < 94abda77b57a35b82bba0365bad072d94d67ffe9
- affected da001fb651b00e1deeaf24767dd691ae8152a4f5 – < 72bbf11ba14bd7d5fbf31a1ec42fff608b657f74
- affected 5.3
- unaffected < 5.3
- unaffected 5.10.270 – ≤ 5.10.*
- unaffected 5.15.221 – ≤ 5.15.*
- unaffected 6.1.188 – ≤ 6.1.*
- unaffected 6.6.157 – ≤ 6.6.*
- unaffected 6.12.110 – ≤ 6.12.*
- unaffected 6.18.52 – ≤ 6.18.*
- unaffected 7.2.6 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References8
- https://git.kernel.org/stable/c/a430b5b6d2ddd2b266330f8507a655be1148347d (opens in a new tab)
- https://git.kernel.org/stable/c/4e76d85e505b7451925efbcd67c015e8c2440c68 (opens in a new tab)
- https://git.kernel.org/stable/c/bcac9052e19490231ff6e0678a06bd2fcf8db3af (opens in a new tab)
- https://git.kernel.org/stable/c/28cc179252347718f97045dd5ea74165609dbd7d (opens in a new tab)
- https://git.kernel.org/stable/c/0d6db386133d9230befb77967bbf130443964860 (opens in a new tab)
- https://git.kernel.org/stable/c/f4d347fb1309b69ea6f817a17e6b2893c8d754b7 (opens in a new tab)
- https://git.kernel.org/stable/c/94abda77b57a35b82bba0365bad072d94d67ffe9 (opens in a new tab)
- https://git.kernel.org/stable/c/72bbf11ba14bd7d5fbf31a1ec42fff608b657f74 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-82267 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://cveledger.app/cve/CVE-2026-93159)Record last updated .