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Date: Thu, 29 Feb 2024 23:37:53 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Subject: CVE-2021-47056: crypto: qat - ADF_STATUS_PF_RUNNING should be set after adf_dev_init Description =========== In the Linux kernel, the following vulnerability has been resolved: crypto: qat - ADF_STATUS_PF_RUNNING should be set after adf_dev_init ADF_STATUS_PF_RUNNING is (only) used and checked by adf_vf2pf_shutdown() before calling adf_iov_putmsg()->mutex_lock(vf2pf_lock), however the vf2pf_lock is initialized in adf_dev_init(), which can fail and when it fail, the vf2pf_lock is either not initialized or destroyed, a subsequent use of vf2pf_lock will cause issue. To fix this issue, only set this flag if adf_dev_init() returns 0. [ 7.178404] BUG: KASAN: user-memory-access in __mutex_lock.isra.0+0x1ac/0x7c0 [ 7.180345] Call Trace: [ 7.182576] mutex_lock+0xc9/0xd0 [ 7.183257] adf_iov_putmsg+0x118/0x1a0 [intel_qat] [ 7.183541] adf_vf2pf_shutdown+0x4d/0x7b [intel_qat] [ 7.183834] adf_dev_shutdown+0x172/0x2b0 [intel_qat] [ 7.184127] adf_probe+0x5e9/0x600 [qat_dh895xccvf] The Linux kernel CVE team has assigned CVE-2021-47056 to this issue. Affected and fixed versions =========================== Issue introduced in 4.7 with commit 25c6ffb249f6 and fixed in 4.9.269 with commit f4c4e0714068 Issue introduced in 4.7 with commit 25c6ffb249f6 and fixed in 4.14.233 with commit 446045cf682a Issue introduced in 4.7 with commit 25c6ffb249f6 and fixed in 4.19.191 with commit 09d16cee6285 Issue introduced in 4.7 with commit 25c6ffb249f6 and fixed in 5.4.119 with commit 05ec8192ee4b Issue introduced in 4.7 with commit 25c6ffb249f6 and fixed in 5.10.37 with commit 1f50392650ae Issue introduced in 4.7 with commit 25c6ffb249f6 and fixed in 5.11.21 with commit 20fd40fc6f2c Issue introduced in 4.7 with commit 25c6ffb249f6 and fixed in 5.12.4 with commit 1ea500ce6f7c Issue introduced in 4.7 with commit 25c6ffb249f6 and fixed in 5.13 with commit 8609f5cfdc87 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-2021-47056 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/crypto/qat/qat_c3xxxvf/adf_drv.c drivers/crypto/qat/qat_c62xvf/adf_drv.c drivers/crypto/qat/qat_dh895xccvf/adf_drv.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/f4c4e07140687f42bfa40e091bb4a55d7960ce4d https://git.kernel.org/stable/c/446045cf682af12d9294765f6c46084b374b5654 https://git.kernel.org/stable/c/09d16cee6285d37cc76311c29add6d97a7e4acda https://git.kernel.org/stable/c/05ec8192ee4bfdf2a8894a68350dac9f1a155fa6 https://git.kernel.org/stable/c/1f50392650ae794a1aea41c213c6a3e1c824413c https://git.kernel.org/stable/c/20fd40fc6f2c2b41dc6f637f88d494b14e9c21f1 https://git.kernel.org/stable/c/1ea500ce6f7c9106e4a561d28e69215f3d451818 https://git.kernel.org/stable/c/8609f5cfdc872fc3a462efa6a3eca5cb1e2f6446
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