Fixed heap-use-after-free (#26454)

[nshestakov]

Changelog entry

Исправлено возможное падение из-за обращения к уже освобожденной памяти

Changelog category

• Bugfix

Description for reviewers

#26225

[github-actions]

⚪ 2025-10-07 15:24:31 UTC Pre-commit check linux-x86_64-release-asan for 3dd6cdf has started.
⚪ 2025-10-07 15:24:35 UTC Artifacts will be uploaded here
⚪ 2025-10-07 15:28:04 UTC ya make is running...
🟡 2025-10-07 17:29:30 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet

Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
15528	15142	0	139	222	25

🟢 2025-10-07 17:31:00 UTC Build successful.
🟢 2025-10-07 17:31:23 UTC ydbd size 3.8 GiB changed* by -1.5 KiB, which is <= 0 Bytes vs stable-25-3-1: OK

ydbd size dash	stable-25-3-1: 5d558fc	merge: 3dd6cdf	diff	diff %
ydbd size	4 045 774 296 Bytes	4 045 772 792 Bytes	-1.5 KiB	-0.000%
ydbd stripped size	1 507 129 568 Bytes	1 507 128 544 Bytes	-1.0 KiB	-0.000%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}

[github-actions]

🟢 2025-10-07 15:25:38 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-10-07 15:27:58 UTC Pre-commit check linux-x86_64-relwithdebinfo for 3dd6cdf has started.
⚪ 2025-10-07 15:28:12 UTC Artifacts will be uploaded here
⚪ 2025-10-07 15:31:57 UTC ya make is running...
🟡 2025-10-07 17:04:13 UTC Some tests failed, follow the links below. Going to retry failed tests...

Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
38185	35488	0	5	2666	26

⚪ 2025-10-07 17:07:56 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-10-07 17:29:05 UTC Tests successful.

Ya make output | Test bloat | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
661 (only retried tests)	649	0	0	0	12

🟢 2025-10-07 17:29:15 UTC Build successful.
🟢 2025-10-07 17:29:31 UTC ydbd size 2.3 GiB changed* by -384 Bytes, which is <= 0 Bytes vs stable-25-3-1: OK

ydbd size dash	stable-25-3-1: 5d558fc	merge: 3dd6cdf	diff	diff %
ydbd size	2 431 652 248 Bytes	2 431 651 864 Bytes	-384 Bytes	-0.000%
ydbd stripped size	520 904 936 Bytes	520 904 808 Bytes	-128 Bytes	-0.000%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}