{"schema_version":"1.9.0","id":"CVE-2023-53331","published":"2025-09-16T16:12:06.788Z","modified":"2026-08-12T03:51:33.037550561Z","related":["SUSE-SU-2025:03600-1","SUSE-SU-2025:03614-1","SUSE-SU-2025:03615-1","SUSE-SU-2025:03628-1","SUSE-SU-2025:03634-1","SUSE-SU-2025:20851-1","SUSE-SU-2025:20861-1","SUSE-SU-2025:20870-1","SUSE-SU-2025:20898-1","SUSE-SU-2025:3716-1","SUSE-SU-2025:3751-1","SUSE-SU-2025:3761-1","SUSE-SU-2025:4057-1","SUSE-SU-2025:4132-1","SUSE-SU-2025:4141-1"],"summary":"pstore/ram: Check start of empty przs during init","details":"In the Linux kernel, the following vulnerability has been resolved:\n\npstore/ram: Check start of empty przs during init\n\nAfter commit 30696378f68a (\"pstore/ram: Do not treat empty buffers as\nvalid\"), initialization would assume a prz was valid after seeing that\nthe buffer_size is zero (regardless of the buffer start position). This\nunchecked start value means it could be outside the bounds of the buffer,\nleading to future access panics when written to:\n\n sysdump_panic_event+0x3b4/0x5b8\n atomic_notifier_call_chain+0x54/0x90\n panic+0x1c8/0x42c\n die+0x29c/0x2a8\n die_kernel_fault+0x68/0x78\n __do_kernel_fault+0x1c4/0x1e0\n do_bad_area+0x40/0x100\n do_translation_fault+0x68/0x80\n do_mem_abort+0x68/0xf8\n el1_da+0x1c/0xc0\n __raw_writeb+0x38/0x174\n __memcpy_toio+0x40/0xac\n persistent_ram_update+0x44/0x12c\n persistent_ram_write+0x1a8/0x1b8\n ramoops_pstore_write+0x198/0x1e8\n pstore_console_write+0x94/0xe0\n ...\n\nTo avoid this, also check if the prz start is 0 during the initialization\nphase. If not, the next prz sanity check case will discover it (start >\nsize) and zap the buffer back to a sane state.\n\n[kees: update commit log with backtrace and clarifications]","affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"e1e3a46706bd4037e8b7407dc660ae6e05b8ac56"},{"fixed":"89312657337e6e03ad6e9ea1a462bd9c158c85c8"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"265242d82a3c6a8bd9120d06b4801f8d7ae9a346"},{"fixed":"c807ccdd812d18985860504b503899f3140a9549"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"30696378f68a9e3dad6bfe55938b112e72af00c2"},{"fixed":"e972231db29b5d1dccc13bf9d5ba55b6979a69ed"},{"fixed":"dc2f60de9a7d3efd982440117dab5579898d808c"},{"fixed":"fedecaeef88899d940b69368c996e8b3b0b8650d"},{"fixed":"e95d7a8a6edd14f8fab44c777dd7281db91f6ae2"},{"fixed":"f77990358628b01bdc03752126ff5f716ea37615"},{"fixed":"25fb4e3402d46f425ec135ef6f09792a4c1b3003"},{"fixed":"fe8c3623ab06603eb760444a032d426542212021"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0"},{"last_affected":"ec7f99261da9a20d63cbd273511a11a2efe698f2"},{"last_affected":"f250e4c562a3bd106575032666e9ef46f31231f8"},{"last_affected":"fffdbf586866e9500b53c9d4b061d3983720375a"},{"last_affected":"9e969ba431b46b1891c88cea36f722f3bfe8a180"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"4.14.96"},{"fixed":"4.14.326"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"4.19.18"},{"fixed":"4.19.295"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"3.18.133"},{"fixed":"3.19"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"4.4.172"},{"fixed":"4.5"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"4.9.153"},{"fixed":"4.10"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"4.20.5"},{"fixed":"4.21"}]}],"versions":["v4.14.325","v4.14.324","v4.14.323","v4.14.322","v4.14.321","v4.14.320","v4.14.319","v4.14.318","v4.14.317","v4.14.316","v4.14.315","v4.14.314","v4.14.313","v4.14.312","v4.14.311","v4.14.310","v4.14.309","v4.14.308","v4.14.307","v4.14.306","v4.14.305","v4.14.304","v4.14.303","v4.14.302","v4.14.301","v4.14.300","v4.14.299","v4.14.298","v4.14.297","v4.14.296","v4.14.295","v4.14.294","v4.14.293","v4.14.292","v4.14.291","v4.14.290","v4.14.289","v4.14.288","v4.14.287","v4.14.286","v4.14.285","v4.14.284","v4.14.283","v4.14.282","v4.14.281","v4.14.280","v4.14.279","v4.14.278","v4.14.277","v4.14.276","v4.14.275","v4.14.274","v4.14.273","v4.14.272","v4.14.271","v4.14.270","v4.14.269","v4.14.268","v4.14.267","v4.14.266","v4.14.265","v4.14.264","v4.14.263","v4.14.262","v4.14.261","v4.14.260","v4.14.259","v4.14.258","v4.14.257","v4.14.256","v4.14.255","v4.14.254","v4.14.253","v4.14.252","v4.14.251","v4.14.250","v4.14.249","v4.14.248","v4.14.247","v4.14.246","v4.14.245","v4.14.244","v4.14.243","v4.14.242","v4.14.241","v4.14.240","v4.14.239","v4.14.238","v4.14.237","v4.14.236","v4.14.235","v4.14.234","v4.14.233","v4.14.232","v4.14.231","v4.14.230","v4.14.229","v4.14.228","v4.14.227","v4.14.226","v4.14.225","v4.14.224","v4.14.223","v4.14.222","v4.14.221","v4.14.220","v4.14.219","v4.14.218","v4.14.217","v4.14.216","v4.14.215","v4.14.214","v4.14.213","v4.14.212","v4.14.211","v4.14.210","v4.14.209","v4.14.208","v4.14.207","v4.14.206","v4.14.205","v4.14.204","v4.14.203","v4.14.202","v4.14.201","v4.14.200","v4.14.199","v4.14.198","v4.14.197","v4.14.196","v4.14.195","v4.14.194","v4.14.193","v4.14.192","v4.14.191","v4.14.190","v4.14.189","v4.14.188","v4.14.187","v4.14.186","v4.14.185","v4.14.184","v4.14.183","v4.14.182","v4.14.181","v4.14.180","v4.14.179","v4.14.178","v4.14.177","v4.14.176","v4.14.175","v4.14.174","v4.14.173","v4.14.172","v4.14.171","v4.14.170","v4.14.169","v4.14.168","v4.14.167","v4.14.166","v4.14.165","v4.14.164","v4.14.163","v4.14.162","v4.14.161","v4.14.160","v4.14.159","v4.14.158","v4.14.157","v4.14.156","v4.14.155","v4.14.154","v4.14.153","v4.14.152","v4.14.151","v4.14.150","v4.14.149","v4.14.148","v4.14.147","v4.14.146","v4.14.145","v4.14.144","v4.14.143","v4.14.142","v4.14.141","v4.14.140","v4.14.139","v4.14.138","v4.14.137","v4.14.136","v4.14.135","v4.14.134","v4.14.133","v4.14.132","v4.14.131","v4.14.130","v4.14.129","v4.14.128","v4.14.127","v4.14.126","v4.14.125","v4.14.124","v4.14.123","v4.14.122","v4.14.121","v4.14.120","v4.14.119","v4.14.118","v4.14.117","v4.14.116","v4.14.115","v4.14.114","v4.14.113","v4.14.112","v4.14.111","v4.14.110","v4.14.109","v4.14.108","v4.14.107","v4.14.106","v4.14.105","v4.14.104","v4.14.103","v4.14.102","v4.14.101","v4.14.100","v4.14.99","v4.14.98","v4.14.97","v4.14.96","v4.19.294","v4.19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