CVE-2026-46212
published 2026-05-28CVE-2026-46212: In the Linux kernel, the following vulnerability has been resolved: batman-adv: bla: prevent use-after-free when deleting claims When…
PriorityP347high8.8CVSS 3.1
AVAACLPRNUINSUCHIHAH
EPSS
0.27%
19.5th percentile
In the Linux kernel, the following vulnerability has been resolved:
batman-adv: bla: prevent use-after-free when deleting claims
When batadv_bla_del_backbone_claims() removes all claims for a backbone, it
does this by dropping the link entry in the hash list. This list entry
itself was one of the references which need to be dropped at the same time
via batadv_claim_put().
But the batadv_claim_put() must not be done before the last access to the
claim object in this function. Otherwise the claim might be freed already
by the batadv_claim_release() function before the list entry was dropped.
Affected
49 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| linux | linux | — | — |
| linux | linux | >= 23721387c409087fd3b97e274f34d3ddc0970b74 < 1d4b241482d9025c537afb3c7c8419c72c0e0c82 | 1d4b241482d9025c537afb3c7c8419c72c0e0c82 |
| linux | linux | >= 23721387c409087fd3b97e274f34d3ddc0970b74 < a1a99837bb6169cfb9187abaa2005e8f12079426 | a1a99837bb6169cfb9187abaa2005e8f12079426 |
| linux | linux | >= 23721387c409087fd3b97e274f34d3ddc0970b74 < b88c865dcf6e9f20bfe66a360d4b62941ef769b8 | b88c865dcf6e9f20bfe66a360d4b62941ef769b8 |
| linux | linux | >= 23721387c409087fd3b97e274f34d3ddc0970b74 < 368449e467d5f1e2c2e987bf2bd57000ba75e10b | 368449e467d5f1e2c2e987bf2bd57000ba75e10b |
| linux | linux | >= 23721387c409087fd3b97e274f34d3ddc0970b74 < 6c5dc6d68e6ba7f0224a757a39ed52fcdb54d472 | 6c5dc6d68e6ba7f0224a757a39ed52fcdb54d472 |
| linux | linux | >= 23721387c409087fd3b97e274f34d3ddc0970b74 < 00155f336a5e8b1006d2ca9ae7ad8fc4a44bb401 | 00155f336a5e8b1006d2ca9ae7ad8fc4a44bb401 |
| linux | linux | >= 23721387c409087fd3b97e274f34d3ddc0970b74 < 0cc9847c64cb6e61118bc78c9187c8209a7197fa | 0cc9847c64cb6e61118bc78c9187c8209a7197fa |
| linux | linux | >= 23721387c409087fd3b97e274f34d3ddc0970b74 < 4ae1709a314060a196981b344610d023ea841e57 | 4ae1709a314060a196981b344610d023ea841e57 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 3.5 < 5.10.258 | 5.10.258 |
| linux | linux_kernel | >= 5.11 < 5.15.209 | 5.15.209 |
| linux | linux_kernel | >= 5.16 < 6.1.175 | 6.1.175 |
| linux | linux_kernel | >= 6.13 < 6.18.32 | 6.18.32 |
| linux | linux_kernel | >= 6.19 < 7.0.9 | 7.0.9 |
| linux | linux_kernel | >= 6.2 < 6.6.140 | 6.6.140 |
| linux | linux_kernel | >= 6.7 < 6.12.90 | 6.12.90 |
| ubuntu | linux | — | — |
| ubuntu | linux-aws | — | — |
| ubuntu | linux-aws-5.15 | — | — |
| ubuntu | linux-aws-fips | — | — |
| ubuntu | linux-fips | — | — |
| ubuntu | linux-gcp | — | — |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vendor_ubuntu7.1HIGH
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shared resources in the operation cache. A local attacker could possibly
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construct a malicious NTFS image that, when mounted and operated on, could
expose sensitive information (kernel memory). (CVE-2023-45896)
It was discovered that some AMD processors did not properly clear data in
the floating point divider unit during speculative execution. A local
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situations, leading to an out-of-bounds read. An attacker could use this to
construct a malicious NTFS image that, when mounted and operated on, could
expose sensitive information (kernel memory). (CVE-2023-45896)
It was discovered that some AMD processors did not properly clear data in
the floating point divider unit during speculative execution. A local
attacker could use this to expose sensitive information. (CVE-2025-54505)
It was discovered that some AMD Zen 2 processors did not properly isolate
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Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that some AMD processors did not properly clear data in
the floating point divider unit during speculative execution. A local
attacker could use this to expose sensitive information. (CVE-2025-54505)
It was discovered that some AMD Zen 2 processors did not properly isolate
shared resources in the operation cache. A local attacker could possibly
use this issue to corrupt instructions executed at a higher privilege
level, resulting in privilege escalation. (CVE-2025-54518)
It was discovered that some AMD Zen 5 processors supporting RDSEED
instruction did not properly handle entropy, potentially resulting in the
consumption of insufficiently random values. A local attacke
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attacker could use this to expose sensitive information. (CVE-2025-54505)
It was discovered that some AMD Zen 2 processors did not properly isolate
shared resources in the operation cache. A local attacker could possibly
use this issue to corrupt instructions executed at a higher privilege
level, resulting in privilege escalation. (CVE-2025-54518)
It was discovered that some AMD Zen 5 processors supporting RDSEED
instruction did not properly handle entropy, potentially resulting in the
consumption of insufficiently random values. A lo
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Linux kernel did not properly validate file name length in certain
situations, leading to an out-of-bounds read. An attacker could use this to
construct a malicious NTFS image that, when mounted and operated on, could
expose sensitive information (kernel memory). (CVE-2023-45896)
It was discovered that some AMD processors did not properly clear data in
the floating point divider unit during speculative execution. A local
attacker could use this to expose sensitive information. (CVE-2025-54505)
It was discovered that some AMD Zen 2 processors did not properly isolate
shared resources in the operation cache. A local
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Summary: Several security issues were fixed in the Linux kernel.
Maxim Suhanov discovered that the NTFS file system implementation in the
Linux kernel did not properly validate file name length in certain
situations, leading to an out-of-bounds read. An attacker could use this to
construct a malicious NTFS image that, when mounted and operated on, could
expose sensitive information (kernel memory). (CVE-2023-45896)
It was discovered that some AMD processors did not properly clear data in
the floating point divider unit during speculative execution. A local
attacker could use this to expose sensitive information. (CVE-2025-54505)
It was discovered that some AMD Zen 2 processors did not properly isolate
shared resources in the operation
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Summary: Several security issues were fixed in the Linux kernel.
It was discovered that some AMD Zen 2 processors did not properly isolate
shared resources in the operation cache. A local attacker could possibly
use this issue to corrupt instructions executed at a higher privilege
level, resulting in privilege escalation. (CVE-2025-54518)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- PSP security protocol;
- ARM64 architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Intel NPU Driver;
- DRBD D
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vendor_ubuntu·2026-07-20·CVSS 2.0
CVE-2026-46073 [LOW] Linux kernel (HWE) vulnerabilities
Title: Linux kernel (HWE) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that some AMD processors did not properly clear data in
the floating point divider unit during speculative execution. A local
attacker could use this to expose sensitive information. (CVE-2025-54505)
It was discovered that some AMD Zen 2 processors did not properly isolate
shared resources in the operation cache. A local attacker could possibly
use this issue to corrupt instructions executed at a higher privilege
level, resulting in privilege escalation. (CVE-2025-54518)
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vendor_ubuntu·2026-07-20·CVSS 2.0
CVE-2026-46073 [LOW] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that some AMD processors did not properly clear data in
the floating point divider unit during speculative execution. A local
attacker could use this to expose sensitive information. (CVE-2025-54505)
It was discovered that some AMD Zen 2 processors did not properly isolate
shared resources in the operation cache. A local attacker could possibly
use this issue to corrupt instructions executed at a higher privilege
level, resulting in privilege escalation. (CVE-2025-54518)
It was discovered that some AMD Zen 5 processors supporting RDSEED
instruction did not properly handle entropy, potentially resulting in the
consumption of insufficiently random values. A local attacke
Ubuntu
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vendor_ubuntu·2026-07-20·CVSS 7.0
CVE-2026-46113 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that some AMD Zen 2 processors did not properly isolate
shared resources in the operation cache. A local attacker could possibly
use this issue to corrupt instructions executed at a higher privilege
level, resulting in privilege escalation. (CVE-2025-54518)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- PSP security protocol;
- ARM64 architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Intel NPU Driver;
- DRBD Distrib
Red Hat
kernel: batman-adv: bla: prevent use-after-free when deleting claims
vendor_redhat·2026-05-28
CVE-2026-46212 CWE-364 kernel: batman-adv: bla: prevent use-after-free when deleting claims
kernel: batman-adv: bla: prevent use-after-free when deleting claims
A flaw was found in the `batman-adv` component of the Linux kernel. This vulnerability, a use-after-free, occurs during the process of deleting backbone claims. If exploited, this memory corruption issue could allow an attacker to cause a system crash, leading to a denial of service, or potentially execute unauthorized code.
Package: kernel (Red Hat Enterprise Linux 10) - Not affected
Package: kernel (Red Hat Enterprise Linux 6) - Not affected
Package: kernel (Red Hat Enterprise Linux 7) - Not affected
Package: kernel-rt (Red Hat Enterprise Linux 7) - Not affected
Package: kernel (Red Hat Enterprise Linux 8) - Not affected
Package: kernel-rt (Red Hat Enterprise Linux 8) - Not affected
Package: kernel (Red Hat Ente
GHSA
GHSA-3qfg-xvm7-p66x: In the Linux kernel, the following vulnerability has been resolved:
batman-adv: bla: prevent use-after-free when deleting claims
When batadv_bla_del
ghsa_unreviewed·2026-05-28
CVE-2026-46212 GHSA-3qfg-xvm7-p66x: In the Linux kernel, the following vulnerability has been resolved:
batman-adv: bla: prevent use-after-free when deleting claims
When batadv_bla_del
In the Linux kernel, the following vulnerability has been resolved:
batman-adv: bla: prevent use-after-free when deleting claims
When batadv_bla_del_backbone_claims() removes all claims for a backbone, it
does this by dropping the link entry in the hash list. This list entry
itself was one of the references which need to be dropped at the same time
via batadv_claim_put().
But the batadv_claim_put() must not be done before the last access to the
claim object in this function. Otherwise the claim might be freed already
by the batadv_claim_release() function before the list entry was dropped.
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/00155f336a5e8b1006d2ca9ae7ad8fc4a44bb401https://git.kernel.org/stable/c/0cc9847c64cb6e61118bc78c9187c8209a7197fahttps://git.kernel.org/stable/c/1d4b241482d9025c537afb3c7c8419c72c0e0c82https://git.kernel.org/stable/c/368449e467d5f1e2c2e987bf2bd57000ba75e10bhttps://git.kernel.org/stable/c/4ae1709a314060a196981b344610d023ea841e57https://git.kernel.org/stable/c/6c5dc6d68e6ba7f0224a757a39ed52fcdb54d472https://git.kernel.org/stable/c/a1a99837bb6169cfb9187abaa2005e8f12079426https://git.kernel.org/stable/c/b88c865dcf6e9f20bfe66a360d4b62941ef769b8
2026-05-28
Published