An update of the linux package has been released.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to avoid use-after-free for     cached IPU bio xfstest generic/019 reports a bug: kernel BUG at mm/filemap.c:1619! RIP:
    0010:folio_end_writeback+0x8a/0x90 Call Trace: end_page_writeback+0x1c/0x60 f2fs_write_end_io+0x199/0x420     bio_endio+0x104/0x180 submit_bio_noacct+0xa5/0x510 submit_bio+0x48/0x80 f2fs_submit_write_bio+0x35/0x300     f2fs_submit_merged_ipu_write+0x2a0/0x2b0 f2fs_write_single_data_page+0x838/0x8b0     f2fs_write_cache_pages+0x379/0xa30 f2fs_write_data_pages+0x30c/0x340 do_writepages+0xd8/0x1b0
    __writeback_single_inode+0x44/0x370 writeback_sb_inodes+0x233/0x4d0 __writeback_inodes_wb+0x56/0xf0     wb_writeback+0x1dd/0x2d0 wb_workfn+0x367/0x4a0 process_one_work+0x21d/0x430 worker_thread+0x4e/0x3c0     kthread+0x103/0x130 ret_from_fork+0x2c/0x50 The root cause is: after cp_error is set,     f2fs_submit_merged_ipu_write() in f2fs_write_single_data_page() tries to flush IPU bio in cache, however     f2fs_submit_merged_ipu_write() missed to check validity of @bio parameter, result in submitting random     cached bio which belong to other IO context, then it will cause use-after-free issue, fix it by adding     additional validity check. (CVE-2023-53537)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Published	Updated	Severity
151965	Photon OS 4.0: Linux PHSA-2021-4.0-0065	Nessus	PhotonOS Local Security Checks	7/22/2021	8/26/2026	high
269330	Linux Distros Unpatched Vulnerability : CVE-2023-53537	Nessus	Misc.	10/8/2025	7/17/2026	high

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