CVE-2026-72013riscv: Prevent NULL pointer dereference in machine_kexec_prepare()
- —Not scoredno CVSS score yet
- 0.21%Exploitation in 30 daysEPSS · top 88% 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: riscv: Prevent NULL pointer dereference in machine_kexec_prepare() A NULL pointer dereference issue is noticed in riscv's machine_kexec_prepare(), where image->segment[i].buf might be NULL and copied unchecked. The NULL buf comes from ima_add_kexec_buffer(), where kbuf is added by kexec_add_buffer(), but kbuf.buffer is NULL, then it is copied without a check in machine_kexec_prepare(): kexec_file_load -> kimage_file_alloc_init() -> kimage_file_prepare_segments() -> ima_add_kexec_buffer() -> kexec_add_buffer() -> machine_kexec_prepare() -> memcpy() Address this by adding a check before the data copy attempt.
Timeline
ID reserved
By Linux
- 6 days later
· 6 days later
Published
- 2 days later
· 2 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)
- 0.21% · top 88% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 4211742f0f9e083188f4f0ada00d6eeeef31b7c7 – < 606cc45e871e34b80a2f63874f069387a5b44176
- affected b7fb4d78a6ade6026d9e5cf438c2a46ab962e032 – < c462e15497dc40abe369b3be7a2c91ac5d1be6f9
- affected b7fb4d78a6ade6026d9e5cf438c2a46ab962e032 – < b5f92cc4e24a298bf390b0b189a4b888c0900161
- affected b7fb4d78a6ade6026d9e5cf438c2a46ab962e032 – < 6ad6954492697681ebcfc1beb0eb384406cd4b65
- affected b7fb4d78a6ade6026d9e5cf438c2a46ab962e032 – < eadd0c2c76aee6a738f17f251434c77db3c606c8
- affected b7fb4d78a6ade6026d9e5cf438c2a46ab962e032 – < d5b2752a17efc165793ae38f2c24b5ed9c04ffde
- affected b7fb4d78a6ade6026d9e5cf438c2a46ab962e032 – < 81bbcff0c053c4f5c711c31a9b72fc492bd96c3f
- affected 3ca8a07f141fd8eec347a82bdfa4b94164f2bb97
- affected 3ba83e46b591381e718007f55c9f831fd0cd7ee8
- affected 5.15.47 – < 5.15.212
- affected 5.17.15 – < 5.18
- affected 5.18.4 – < 5.19
- affected 5.19
- unaffected < 5.19
- unaffected 5.15.212 – ≤ 5.15.*
- unaffected 6.1.178 – ≤ 6.1.*
- unaffected 6.6.145 – ≤ 6.6.*
- unaffected 6.12.97 – ≤ 6.12.*
- unaffected 6.18.40 – ≤ 6.18.*
- unaffected 7.1.5 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References7
- https://git.kernel.org/stable/c/606cc45e871e34b80a2f63874f069387a5b44176 (opens in a new tab)
- https://git.kernel.org/stable/c/c462e15497dc40abe369b3be7a2c91ac5d1be6f9 (opens in a new tab)
- https://git.kernel.org/stable/c/b5f92cc4e24a298bf390b0b189a4b888c0900161 (opens in a new tab)
- https://git.kernel.org/stable/c/6ad6954492697681ebcfc1beb0eb384406cd4b65 (opens in a new tab)
- https://git.kernel.org/stable/c/eadd0c2c76aee6a738f17f251434c77db3c606c8 (opens in a new tab)
- https://git.kernel.org/stable/c/d5b2752a17efc165793ae38f2c24b5ed9c04ffde (opens in a new tab)
- https://git.kernel.org/stable/c/81bbcff0c053c4f5c711c31a9b72fc492bd96c3f (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-2026-59112 (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-2026-72013)Record last updated .