CVE-2022-49085
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2022
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
drbd: Fix five use after free bugs in get_initial_state
In the Linux kernel, the following vulnerability has been resolved: drbd: Fix five use after free bugs in get_initial_state In get_initial_state, it calls notify_initial_state_done(skb,..) if cb->args[5]==1. If genlmsg_put() failed in notify_initial_state_done(), the skb will be freed by nlmsg_free(skb). Then get_initial_state will goto out and the freed skb will be used by return value skb->len, which is a uaf bug. What's worse, the same problem goes even further: skb can also be freed in the notify_*_state_change -> notify_*_state calls below. Thus 4 additional uaf bugs happened. My patch lets the problem callee functions: notify_initial_state_done and notify_*_state_change return an error code if errors happen. So that the error codes could be propagated and the uaf bugs can be avoid. v2 reports a compilation warning. This v3 fixed this warning and built successfully in my local environment with no additional warnings. v2: https://lore.kernel.org/patchwork/patch/1435218/
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) |
|---|---|---|---|---|---|
| a29728463b254ce81ecefdf20c1a02e01d9361da | affected | git | 0489700bfeb1e53eb2039c2291c67e71b0b40103 | Unavailable | None listed |
| a29728463b254ce81ecefdf20c1a02e01d9361da | affected | git | dcf6be17b5c53b741898d2223b23e66d682de300 | Unavailable | None listed |
| a29728463b254ce81ecefdf20c1a02e01d9361da | affected | git | 188fe6b26765edbad4055611c0f788b6870f4024 | Unavailable | None listed |
| a29728463b254ce81ecefdf20c1a02e01d9361da | affected | git | b6a4055036eed1f5e239ce3d8b0db1ce38bba447 | Unavailable | None listed |
| a29728463b254ce81ecefdf20c1a02e01d9361da | affected | git | 594205b4936771a250f9d141e7e0fff21c3dd2d9 | Unavailable | None listed |
| a29728463b254ce81ecefdf20c1a02e01d9361da | affected | git | a972c768723359ec995579902473028fe3cd64b1 | Unavailable | None listed |
| a29728463b254ce81ecefdf20c1a02e01d9361da | affected | git | de63e74da2333b4068bb79983e632db730fea97e | Unavailable | None listed |
| a29728463b254ce81ecefdf20c1a02e01d9361da | affected | git | 226e993c39405292781bfcf4b039a8db56aab362 | Unavailable | None listed |
| a29728463b254ce81ecefdf20c1a02e01d9361da | affected | git | aadb22ba2f656581b2f733deb3a467c48cc618f6 | 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) |
|---|---|---|---|---|---|
| 4.5 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.5 | Unavailable | None listed |
| 4.9.311 | unaffected | semver | Unavailable | 4.9.* | None listed |
| 4.14.276 | unaffected | semver | Unavailable | 4.14.* | None listed |
| 4.19.238 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.189 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.111 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.34 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 5.16.20 | unaffected | semver | Unavailable | 5.16.* | None listed |
| 5.17.3 | unaffected | semver | Unavailable | 5.17.* | None listed |
| 5.18 | unaffected | original_commit_for_fix | Unavailable | * | None listed |