CVE-2026-45964
published 2026-05-27CVE-2026-45964: In the Linux kernel, the following vulnerability has been resolved: SUNRPC: fix gss_auth kref leak in gss_alloc_msg error path Commit 5940d1cf9f42 ("SUNRPC…
medium5.5
In the Linux kernel, the following vulnerability has been resolved:
SUNRPC: fix gss_auth kref leak in gss_alloc_msg error path
Commit 5940d1cf9f42 ("SUNRPC: Rebalance a kref in auth_gss.c") added
a kref_get(&gss_auth->kref) call to balance the gss_put_auth() done
in gss_release_msg(), but forgot to add a corresponding kref_put()
on the error path when kstrdup_const() fails.
If service_name is non-NULL and kstrdup_const() fails, the function
jumps to err_put_pipe_version which calls put_pipe_version() and
kfree(gss_msg), but never releases the gss_auth reference. This leads
to a kref leak where the gss_auth structure is never freed.
Add a forward declaration for gss_free_callback() and call kref_put()
in the err_put_pipe_version error path to properly release the
reference taken earlier.
Affected
10 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| linux | linux | — | — |
| linux | linux | >= 5940d1cf9f42f67e9cc3f7df9eda39f5888d6e9e < 3b2b6c42070ce4204936288253baf101e995c2d3 | 3b2b6c42070ce4204936288253baf101e995c2d3 |
| linux | linux | >= 5940d1cf9f42f67e9cc3f7df9eda39f5888d6e9e < b559be2ec6cdb2e9c2c36c23fbbd4690d8a5c3f7 | b559be2ec6cdb2e9c2c36c23fbbd4690d8a5c3f7 |
| linux | linux | >= 5940d1cf9f42f67e9cc3f7df9eda39f5888d6e9e < a1bc9561b617ec7e2d09e6c134d1db8fcf9ca4a6 | a1bc9561b617ec7e2d09e6c134d1db8fcf9ca4a6 |
| linux | linux | >= 5940d1cf9f42f67e9cc3f7df9eda39f5888d6e9e < 655c9ba9915f05266998dbbf4b76b3c79b8a70aa | 655c9ba9915f05266998dbbf4b76b3c79b8a70aa |
| linux | linux | >= 5940d1cf9f42f67e9cc3f7df9eda39f5888d6e9e < e464e26b2457005c87e158570498274b9f3b90c7 | e464e26b2457005c87e158570498274b9f3b90c7 |
| linux | linux | >= 5940d1cf9f42f67e9cc3f7df9eda39f5888d6e9e < c20f925214249bb4fc04f7e197bea142a6438af6 | c20f925214249bb4fc04f7e197bea142a6438af6 |
| linux | linux | >= 5940d1cf9f42f67e9cc3f7df9eda39f5888d6e9e < a2d4e9a76de0b2178001214ba5de5bf94a7354aa | a2d4e9a76de0b2178001214ba5de5bf94a7354aa |
| linux | linux | >= 5940d1cf9f42f67e9cc3f7df9eda39f5888d6e9e < dd2fdc3504592d85e549c523b054898a036a6afe | dd2fdc3504592d85e549c523b054898a036a6afe |
| linux | linux_kernel | — | — |