Awaiting Analysis
CVE has been recently published to the CVE List and has been received by the NVD.

Products

Linux kernel

4.13 - 5.10

Linux kernel

4.13 - 5.6

Source

416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVE-2021-47259 details

Published : May 21, 2024, 3:15 p.m.
Last Modified : May 21, 2024, 4:54 p.m.

Description

In the Linux kernel, the following vulnerability has been resolved: NFS: Fix use-after-free in nfs4_init_client() KASAN reports a use-after-free when attempting to mount two different exports through two different NICs that belong to the same server. Olga was able to hit this with kernels starting somewhere between 5.7 and 5.10, but I traced the patch that introduced the clear_bit() call to 4.13. So something must have changed in the refcounting of the clp pointer to make this call to nfs_put_client() the very last one.

CVSS Score

1	2	3	4	5	6	7	8	9	10

Weakness

Weakness	Name	Description

References

URL	Source
https://git.kernel.org/stable/c/3e3c7ebbfac152d08be75c92802a64a1f6471a15	416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/42c10b0db064e45f5c5ae7019bbf2168ffab766c	416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/476bdb04c501fc64bf3b8464ffddefc8dbe01577	416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/72651c6579a25317a90536181d311c663d0329ab	416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/c3b6cf64dfe4ef96e7341508d50d6998da7062c7	416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/c7eab9e2d7b4e983ce280276fb920af649955897	416baaa9-dc9f-4396-8d5f-8c081fb06d67

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CVE-2021-47259