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Message-ID: <2024052240-CVE-2021-47443-e331@gregkh> Date: Wed, 22 May 2024 08:19:46 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Subject: CVE-2021-47443: NFC: digital: fix possible memory leak in digital_tg_listen_mdaa() Description =========== In the Linux kernel, the following vulnerability has been resolved: NFC: digital: fix possible memory leak in digital_tg_listen_mdaa() 'params' is allocated in digital_tg_listen_mdaa(), but not free when digital_send_cmd() failed, which will cause memory leak. Fix it by freeing 'params' if digital_send_cmd() return failed. The Linux kernel CVE team has assigned CVE-2021-47443 to this issue. Affected and fixed versions =========================== Issue introduced in 3.13 with commit 1c7a4c24fbfd and fixed in 4.4.290 with commit 429054ec51e6 Issue introduced in 3.13 with commit 1c7a4c24fbfd and fixed in 4.9.288 with commit a67d47e32c91 Issue introduced in 3.13 with commit 1c7a4c24fbfd and fixed in 4.14.252 with commit b7b023e6ff56 Issue introduced in 3.13 with commit 1c7a4c24fbfd and fixed in 4.19.213 with commit 9881b0c86064 Issue introduced in 3.13 with commit 1c7a4c24fbfd and fixed in 5.4.155 with commit 7ab488d7228a Issue introduced in 3.13 with commit 1c7a4c24fbfd and fixed in 5.10.75 with commit 3f2960b39f22 Issue introduced in 3.13 with commit 1c7a4c24fbfd and fixed in 5.14.14 with commit 564249219e5b Issue introduced in 3.13 with commit 1c7a4c24fbfd and fixed in 5.15 with commit 58e7dcc9ca29 Please see https://www.kernel.org for 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-2021-47443 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: net/nfc/digital_core.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/429054ec51e648d241a7e0b465cf44f6633334c5 https://git.kernel.org/stable/c/a67d47e32c91e2b10402cb8c081774cbf08edb2e https://git.kernel.org/stable/c/b7b023e6ff567e991c31cd425b0e1d16779c938b https://git.kernel.org/stable/c/9881b0c860649f27ef2565deef011e516390f416 https://git.kernel.org/stable/c/7ab488d7228a9dceb2456867f1f0919decf6efed https://git.kernel.org/stable/c/3f2960b39f22e26cf8addae93c3f5884d1c183c9 https://git.kernel.org/stable/c/564249219e5b5673a8416b5181875d828c3f1e8c https://git.kernel.org/stable/c/58e7dcc9ca29c14e44267a4d0ea61e3229124907
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