| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <2024030141-CVE-2021-47071-cd46@gregkh> Date: Fri, 1 Mar 2024 22:15:44 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Subject: CVE-2021-47071: uio_hv_generic: Fix a memory leak in error handling paths Description =========== In the Linux kernel, the following vulnerability has been resolved: uio_hv_generic: Fix a memory leak in error handling paths If 'vmbus_establish_gpadl()' fails, the (recv|send)_gpadl will not be updated and 'hv_uio_cleanup()' in the error handling path will not be able to free the corresponding buffer. In such a case, we need to free the buffer explicitly. The Linux kernel CVE team has assigned CVE-2021-47071 to this issue. Affected and fixed versions =========================== Issue introduced in 4.20 with commit cdfa835c6e5e and fixed in 5.4.122 with commit cdd91637d4ef Issue introduced in 4.20 with commit cdfa835c6e5e and fixed in 5.10.40 with commit d84b5e912212 Issue introduced in 4.20 with commit cdfa835c6e5e and fixed in 5.12.7 with commit 53486c467e35 Issue introduced in 4.20 with commit cdfa835c6e5e and fixed in 5.13 with commit 3ee098f96b8b Please see https://www.kernel.org or a full list of currently supported kernel versions by the kernel community. Unaffected versions might change over time as fixes are backported to older supported kernel versions. The official CVE entry at https://cve.org/CVERecord/?id=CVE-2021-47071 will be updated if fixes are backported, please check that for the most up to date information about this issue. Affected files ============== The file(s) affected by this issue are: drivers/uio/uio_hv_generic.c Mitigation ========== The Linux kernel CVE team recommends that you update to the latest stable kernel version for this, and many other bugfixes. Individual changes are never tested alone, but rather are part of a larger kernel release. Cherry-picking individual commits is not recommended or supported by the Linux kernel community at all. If however, updating to the latest release is impossible, the individual changes to resolve this issue can be found at these commits: https://git.kernel.org/stable/c/cdd91637d4ef33e2be19a8e16e72e7d00c996d76 https://git.kernel.org/stable/c/d84b5e912212b05f6b5bde9f682046accfbe0354 https://git.kernel.org/stable/c/53486c467e356e06aa37047c984fccd64d78c827 https://git.kernel.org/stable/c/3ee098f96b8b6c1a98f7f97915f8873164e6af9d
Powered by blists - more mailing lists