CVE-2021-47388
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2021
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
mac80211: fix use-after-free in CCMP/GCMP RX
In the Linux kernel, the following vulnerability has been resolved: mac80211: fix use-after-free in CCMP/GCMP RX When PN checking is done in mac80211, for fragmentation we need to copy the PN to the RX struct so we can later use it to do a comparison, since commit bf30ca922a0c ("mac80211: check defrag PN against current frame"). Unfortunately, in that commit I used the 'hdr' variable without it being necessarily valid, so use-after-free could occur if it was necessary to reallocate (parts of) the frame. Fix this by reloading the variable after the code that results in the reallocations, if any. This fixes https://bugzilla.kernel.org/show_bug.cgi?id=214401.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 608b0a2ae928a74a2f89e02227339dd79cdb63cf | affected | git | 447d001b875d0e7f211c4ba004916028da994258 | Unavailable | None listed |
| d0f613fe6de344dc17ba04a88921a2094c13d3fa | affected | git | 31de381aef0ab1b342f62485118dc8a19363dc78 | Unavailable | None listed |
| a9b57952fed41556c950a92123086724eaf11919 | affected | git | f556e1d6fb9f2923a9a36f3df638c7d79ba09dbb | Unavailable | None listed |
| 0f716b48ed25503e6961f4b5b40ece36f7e4ed26 | affected | git | 3d5d629c99c468458022e9b381789de3595bf4dd | Unavailable | None listed |
| c8b3a6150dc8ac78d5fdd5fbdfc4806249ef8b2c | affected | git | 50149e0866a82cef33e680ee68dc380a5bc75d32 | Unavailable | None listed |
| e64ea0597050157f926ac2ba9b478a44ee5be945 | affected | git | 57de2dcb18742dc2860861c9f496da7d42b67da0 | Unavailable | None listed |
| bf30ca922a0c0176007e074b0acc77ed345e9990 | affected | git | 27d3eb5616ee2c0a3b30c3fa34813368ed1f3dc9 | Unavailable | None listed |
| bf30ca922a0c0176007e074b0acc77ed345e9990 | affected | git | 94513069eb549737bcfc3d988d6ed4da948a2de8 | Unavailable | None listed |
| 1f0bf30c01d3f4de7d6c5e27b102a808c5646676 | affected | git | Unavailable | Unavailable | None listed |
| 4.4.271 | affected | semver | 4.4.286 | Unavailable | None listed |
| 4.9.271 | affected | semver | 4.9.285 | Unavailable | None listed |
| 4.14.235 | affected | semver | 4.14.249 | Unavailable | None listed |
| 4.19.193 | affected | semver | 4.19.209 | Unavailable | None listed |
| 5.4.124 | affected | semver | 5.4.151 | Unavailable | None listed |
| 5.10.42 | affected | semver | 5.10.71 | Unavailable | None listed |
| 5.12.9 | affected | semver | 5.13 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5.13 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.13 | Unavailable | None listed |
| 4.4.286 | unaffected | semver | Unavailable | 4.4.* | None listed |
| 4.9.285 | unaffected | semver | Unavailable | 4.9.* | None listed |
| 4.14.249 | unaffected | semver | Unavailable | 4.14.* | None listed |
| 4.19.209 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.151 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.71 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.14.10 | unaffected | semver | Unavailable | 5.14.* | None listed |
| 5.15 | unaffected | original_commit_for_fix | Unavailable | * | None listed |