CVE-2025-71291misc: bcm_vk: Fix possible null-pointer dereferences in bcm_vk_read()
- 5.5MediumCVSS base score
- 0.12%Exploitation in 30 daysEPSS · top 98% 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: misc: bcm_vk: Fix possible null-pointer dereferences in bcm_vk_read() In the function bcm_vk_read(), the pointer entry is checked, indicating that it can be NULL. If entry is NULL and rc is set to -EMSGSIZE, the following code may cause null-pointer dereferences: struct vk_msg_blk tmp_msg = entry->to_h_msg[0]; set_msg_id(&tmp_msg, entry->usr_msg_id); tmp_msg.size = entry->to_h_blks - 1; To prevent these possible null-pointer dereferences, copy to_h_msg, usr_msg_id, and to_h_blks from iter into temporary variables, and return these temporary variables to the application instead of accessing them through a potentially NULL entry.
Timeline
ID reserved
By Linux
Published
- 5 days later
· 5 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
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.12% · top 98% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 88517757a829e9ce146a6c7233ad5dcdc66fcbb0 – < 741c5a3a0cd893a4218fc0fc8c18403e54fcfb22
- affected 88517757a829e9ce146a6c7233ad5dcdc66fcbb0 – < ece3722169ba93734bfd1f06255e8ab7f19fe964
- affected 88517757a829e9ce146a6c7233ad5dcdc66fcbb0 – < aa97ccc3dc1eba9f4537f0410e9dbb0b05ccf2fb
- affected 88517757a829e9ce146a6c7233ad5dcdc66fcbb0 – < 3842f93e6e29d5cc1dcb9e5bda70587b444bed69
- affected 88517757a829e9ce146a6c7233ad5dcdc66fcbb0 – < 20f2d9dbe5e972516f8f9948d7ae5b95d1ad77bd
- affected 88517757a829e9ce146a6c7233ad5dcdc66fcbb0 – < ba75ecb97d3f4e95d59002c13afb6519205be6cb
- affected 5.19
- unaffected < 5.19
- unaffected 6.1.165 – ≤ 6.1.*
- unaffected 6.6.128 – ≤ 6.6.*
- unaffected 6.12.75 – ≤ 6.12.*
- unaffected 6.18.16 – ≤ 6.18.*
- unaffected 6.19.6 – ≤ 6.19.*
- unaffected 7.0 – ≤ *
References
References6
- https://git.kernel.org/stable/c/741c5a3a0cd893a4218fc0fc8c18403e54fcfb22 (opens in a new tab)
- https://git.kernel.org/stable/c/ece3722169ba93734bfd1f06255e8ab7f19fe964 (opens in a new tab)
- https://git.kernel.org/stable/c/aa97ccc3dc1eba9f4537f0410e9dbb0b05ccf2fb (opens in a new tab)
- https://git.kernel.org/stable/c/3842f93e6e29d5cc1dcb9e5bda70587b444bed69 (opens in a new tab)
- https://git.kernel.org/stable/c/20f2d9dbe5e972516f8f9948d7ae5b95d1ad77bd (opens in a new tab)
- https://git.kernel.org/stable/c/ba75ecb97d3f4e95d59002c13afb6519205be6cb (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-2025-209680 (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)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-71291)Record last updated .