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CVE-2026-53210

tee: shm: fix shm leak in register_shm_helper() PUBLISHED

Description (CNA)

In the Linux kernel, the following vulnerability has been resolved: tee: shm: fix shm leak in register_shm_helper() register_shm_helper() allocates shm before calling iov_iter_npages(). If iov_iter_npages() returns 0, the function jumps to err_ctx_put and leaks shm. This can be triggered by TEE_IOC_SHM_REGISTER with struct tee_ioctl_shm_register_data where length is 0. Jump to err_free_shm instead.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 7bdee41575919773818e525ea19e54eb817770af before 4277759906b44d923a38c8f59f5576501b187b0d; affected 7bdee41575919773818e525ea19e54eb817770af before c10c9c48b2903f41ed4c532043b0576e86228236; affected 7bdee41575919773818e525ea19e54eb817770af before dbf779db927414f5b37c1f666013e9b48a88cfde; affected 7bdee41575919773818e525ea19e54eb817770af before 26682f5efc276e3ad96d102019472bfbf03833b2
Linux / Linuxaffected 6.8; unaffected 0 before 6.8; unaffected 6.12.94 through 6.12.*; unaffected 6.18.36 through 6.18.*; unaffected 7.0.13 through 7.0.*; unaffected 7.1 through *

CWE

No CWE identifiers supplied.

References