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(parent: 505114d) | patch
ima: Fix a potential integer overflow in ima_appraise_measurement
authorHuaxin Lu <luhuaxin1@huawei.com>
Tue, 5 Jul 2022 05:14:17 +0000 (13:14 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 21 Jul 2022 19:24:18 +0000 (21:24 +0200)
commitc8d5d81940938b5f6c0f495ca9538e7740416f30
tree91a6a6fb6b7984807c0c9a196f336704de4bd7cbtree | snapshot
parent505114dda5bbfd07f4ce9a2df5b7d8ef5f2a1218commit | diff
ima: Fix a potential integer overflow in ima_appraise_measurement

[ Upstream commit d2ee2cfc4aa85ff6a2a3b198a3a524ec54e3d999 ]

When the ima-modsig is enabled, the rc passed to evm_verifyxattr() may be
negative, which may cause the integer overflow problem.

Fixes: 39b07096364a ("ima: Implement support for module-style appended signatures")
Signed-off-by: Huaxin Lu <luhuaxin1@huawei.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
security/integrity/ima/ima_appraise.c diff | blob | history
Domain: System / Kernel;