CVE-2026-80761Bluetooth: ISO: zero the sockaddr before returning it in getname
- —Not scoredno CVSS score yet
- 0.21%Exploitation in 30 daysEPSS · top 89% 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: Bluetooth: ISO: zero the sockaddr before returning it in getname iso_sock_getname() fills a struct sockaddr_iso in place and returns its size without clearing it first, so bytes it does not write are copied to user space from the kernel stack. The getsockname(2) and getpeername(2) paths both run through do_getsockname(), which hands getname() an uninitialized sockaddr_storage on the stack and copies back up to the number of bytes getname() returns, so the driver has to initialize every byte it accounts for. Two ranges are left uninitialized: - struct sockaddr_iso is 10 bytes but only 9 are written (family, iso_bdaddr, iso_bdaddr_type), leaking the trailing pad byte on every call. - for a broadcast peer (BIS_LINK or PA_LINK) the returned length grows by sizeof(struct sockaddr_iso_bc), but only bc_sid, bc_num_bis and bc_bis are filled; bc_bdaddr and bc_bdaddr_type, the first 7 bytes of that structure, are never written. An unprivileged process can open a BTPROTO_ISO socket and reach the pad leak with getsockname(); the broadcast leak needs an established BIS/PA connection. l2cap and rfcomm already memset their sockaddr in getname for the same reason; do the same here.
Timeline
ID reserved
By Linux
- 9 days later
· 9 days later
Published
- 56 days later
· 56 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 89% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected ccf74f2390d60a2f9a75ef496d2564abb478f46a – < 182d3ef350c437b1e4ae07e45f82e271e2033bd7
- affected ccf74f2390d60a2f9a75ef496d2564abb478f46a – < 90be10604936c9042dc6238d8836abafca471811
- affected ccf74f2390d60a2f9a75ef496d2564abb478f46a – < 554594d032aa4356ca4be75d0cb46e13d350dbd2
- affected ccf74f2390d60a2f9a75ef496d2564abb478f46a – < 1f6d1f2611af0eb36b133a41d29ffd2cc2601615
- affected ccf74f2390d60a2f9a75ef496d2564abb478f46a – < 9069be87c67f290783b332c4284e09fb89cb9ea7
- affected ccf74f2390d60a2f9a75ef496d2564abb478f46a – < 190b719b787eb4ca6c25b12fab224806f9108b06
- affected ccf74f2390d60a2f9a75ef496d2564abb478f46a – < 884cf2cc957da7ac178a0e6c6c69ddfec0481cc8
- affected 6.0
- unaffected < 6.0
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.160 – ≤ 6.6.*
- unaffected 6.12.114 – ≤ 6.12.*
- unaffected 6.18.47 – ≤ 6.18.*
- unaffected 7.1.11 – ≤ 7.1.*
- unaffected 7.2.1 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References7
- https://git.kernel.org/stable/c/182d3ef350c437b1e4ae07e45f82e271e2033bd7 (opens in a new tab)
- https://git.kernel.org/stable/c/90be10604936c9042dc6238d8836abafca471811 (opens in a new tab)
- https://git.kernel.org/stable/c/554594d032aa4356ca4be75d0cb46e13d350dbd2 (opens in a new tab)
- https://git.kernel.org/stable/c/1f6d1f2611af0eb36b133a41d29ffd2cc2601615 (opens in a new tab)
- https://git.kernel.org/stable/c/9069be87c67f290783b332c4284e09fb89cb9ea7 (opens in a new tab)
- https://git.kernel.org/stable/c/190b719b787eb4ca6c25b12fab224806f9108b06 (opens in a new tab)
- https://git.kernel.org/stable/c/884cf2cc957da7ac178a0e6c6c69ddfec0481cc8 (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-2026-71404 (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-2026-80761)Record last updated .