* Re: CVE-2022-49267: mmc: core: use sysfs_emit() instead of sprintf() [not found] <2025022629-CVE-2022-49267-b3ac@gregkh> @ 2026-03-24 7:42 ` Siddh Raman Pant 2026-03-24 8:34 ` gregkh 0 siblings, 1 reply; 2+ messages in thread From: Siddh Raman Pant @ 2026-03-24 7:42 UTC (permalink / raw) To: gregkh; +Cc: cve, linux-kernel [-- Attachment #1: Type: text/plain, Size: 783 bytes --] On Wed, 26 Feb 2025 02:57:52 +0100, Greg Kroah-Hartman wrote: > In the Linux kernel, the following vulnerability has been resolved: > > mmc: core: use sysfs_emit() instead of sprintf() > > sprintf() (still used in the MMC core for the sysfs output) is vulnerable > to the buffer overflow. Use the new-fangled sysfs_emit() instead. > > Found by Linux Verification Center (linuxtesting.org) with the SVACE static > analysis tool. > > The Linux kernel CVE team has assigned CVE-2022-49267 to this issue. What overflow does this actually fix? I think this is a defensive patch. In fact, you asked the same question earlier during stable backport which apparently got no reply: https://lore.kernel.org/all/2025121205-wool-undesired-0609@gregkh/ Thanks, Siddh [-- Attachment #2: This is a digitally signed message part --] [-- Type: application/pgp-signature, Size: 833 bytes --] ^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: CVE-2022-49267: mmc: core: use sysfs_emit() instead of sprintf() 2026-03-24 7:42 ` CVE-2022-49267: mmc: core: use sysfs_emit() instead of sprintf() Siddh Raman Pant @ 2026-03-24 8:34 ` gregkh 0 siblings, 0 replies; 2+ messages in thread From: gregkh @ 2026-03-24 8:34 UTC (permalink / raw) To: Siddh Raman Pant; +Cc: cve, linux-kernel On Tue, Mar 24, 2026 at 07:42:23AM +0000, Siddh Raman Pant wrote: > On Wed, 26 Feb 2025 02:57:52 +0100, Greg Kroah-Hartman wrote: > > In the Linux kernel, the following vulnerability has been resolved: > > > > mmc: core: use sysfs_emit() instead of sprintf() > > > > sprintf() (still used in the MMC core for the sysfs output) is vulnerable > > to the buffer overflow. Use the new-fangled sysfs_emit() instead. > > > > Found by Linux Verification Center (linuxtesting.org) with the SVACE static > > analysis tool. > > > > The Linux kernel CVE team has assigned CVE-2022-49267 to this issue. > > What overflow does this actually fix? I think this is a defensive patch. > > In fact, you asked the same question earlier during stable backport > which apparently got no reply: > https://lore.kernel.org/all/2025121205-wool-undesired-0609@gregkh/ You are correct, this is now rejected, thanks for the review. greg k-h ^ permalink raw reply [flat|nested] 2+ messages in thread
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2026-03-24 7:42 ` CVE-2022-49267: mmc: core: use sysfs_emit() instead of sprintf() Siddh Raman Pant
2026-03-24 8:34 ` gregkh
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