CVE-2026-64089
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
batman-adv: tt: fix negative last_changeset_len
In the Linux kernel, the following vulnerability has been resolved: batman-adv: tt: fix negative last_changeset_len batadv_piv_tt::last_changeset_len len was declared as s16, but the field is never intended to hold a negative value. When a value greater than 32767 is assigned, it wraps to a negative signed integer. In batadv_send_my_tt_response(), last_changeset_len is temporarily widened to s32. The incorrectly negative s16 value propagates into the s32, causing batadv_tt_prepare_tvlv_local_data() to allocate a full sized buffer but populates only a small portion of it with the collected changeset. All remaining bits are kept uninitialized. Using an u16 avoids this type confusion and ensures that no (negative) sign extension is performed in batadv_send_my_tt_response().
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) |
|---|---|---|---|---|---|
| a73105b8d4c765d9ebfb664d0a66802127d8e4c7 | affected | git | 6314089acf0ddf64376fdc0b1420695504c73f52 | Unavailable | None listed |
| a73105b8d4c765d9ebfb664d0a66802127d8e4c7 | affected | git | 55dc41fe8821e9a849e147255ad572bc933a9d15 | Unavailable | None listed |
| a73105b8d4c765d9ebfb664d0a66802127d8e4c7 | affected | git | c424e8519ac78eac5d9f4eecf06208a0d619ec14 | Unavailable | None listed |
| a73105b8d4c765d9ebfb664d0a66802127d8e4c7 | affected | git | 22d59c72f4a47ffec121d0610f70d0d70c3c11c8 | Unavailable | None listed |
| a73105b8d4c765d9ebfb664d0a66802127d8e4c7 | affected | git | eb235472b52ef36981c5aad330485eaf2382c53b | Unavailable | None listed |
| a73105b8d4c765d9ebfb664d0a66802127d8e4c7 | affected | git | 179eb62506a02d00370bd6478898cb632e10986c | Unavailable | None listed |
| a73105b8d4c765d9ebfb664d0a66802127d8e4c7 | affected | git | d29abf70c665730e249d2ec8e1402095ae26bcee | Unavailable | None listed |
| a73105b8d4c765d9ebfb664d0a66802127d8e4c7 | affected | git | fc92cdfcb295cefa4344d71a527d61b638b7bfc4 | 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) |
|---|---|---|---|---|---|
| 3.1 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.1 | Unavailable | None listed |
| 5.10.258 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.209 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.175 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.142 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.92 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.34 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.0.11 | unaffected | semver | Unavailable | 7.0.* | None listed |
| 7.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |